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You searched for: Journal name Journal of materials science Remove constraint Journal name: Journal of materials science Subject term mixing Remove constraint Subject term: mixing
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1. 3D printed ferromagnetic composites for microwave applications

Author:
Younès Arbaoui; Philippe Agaciak; Alexis Chevalier; Vincent Laur; Azar Maalouf; Julien Ville; Philippe Roquefort; Thierry Aubry; Patrick Queffelec
Source:
Journal of materials science 2017 v.52 no.9 pp. 4988-4996
ISSN:
0022-2461
Subject:
alloys; electronics; mixing; models; polyethylene; rheological properties
Abstract:
... The use of 3D technology in the field of microwave electronics requires the development of new materials adapted to these applications. In this study, magnetic composites composed of polyethylene (PE) matrix filled with Nickel–Iron alloy (Ni₈₁Fe₁₉) are prepared using two elaboration devices: first, a propeller mixer for small quantity of samples, and then, a twin screw extruder able to produce hig ...
DOI:
10.1007/s10853-016-0737-3

2. A combination of three surface modifiers for the optimal generation and application of natural hybrid nanopigments in a biodegradable resin

Author:
Bàrbara Micó-Vicent; Jorge Jordán; Francisco Martínez-Verdú; Rafael Balart
Source:
Journal of materials science 2017 v.52 no.2 pp. 889-898
ISSN:
0022-2461
Subject:
alum; beets; beta-carotene; biodegradability; chlorophyll; color; colorimetry; dyeing; epoxides; fabrics; hydrotalcite; mixing; montmorillonite; nanoclays; nanocomposites; natural dyes; pH; pigments; surfactants
Abstract:
... Our purpose was to improve the thermal, mechanical and optimal properties of an epoxy bioresin using optimum hybrid natural pigments previously synthesised in our lab. Next, we searched for the best combinations of factors in the synthesis of natural hybrid nanopigments and then incorporated them into the bioresin. We combined three structural modifiers in the nanopigment synthesis, surfactant, co ...
DOI:
10.1007/s10853-016-0384-8

3. A combined synchrotron radiation micro computed tomography and micro X-ray diffraction study on deleterious alkali-silica reaction

Author:
Nicoletta Marinoni; Marco Voltolini; Maarten A. T. M. Broekmans; Lucia Mancini; Paulo J. M. Monteiro; Nicola Rotiroti; Elena Ferrari; Andrea Bernasconi
Source:
Journal of materials science 2015 v.50 no.24 pp. 7985-7997
ISSN:
0022-2461
Subject:
X-ray diffraction; cement; computed tomography; crystals; mixing; quartz; sodium hydroxide; weathering
Abstract:
... Synchrotron radiation micro computed tomography (SR Micro CT) and micro X-ray diffraction (SR Micro XRD) were used to investigate the deleterious effects of alkali-silica reaction (ASR) in mortar bars. The samples were prepared by mixing ordinary Portland cement and chert, the latter consists of quartz crystals known to be potentially alkali-silica reactive; then they are aged in a NaOH solution a ...
DOI:
10.1007/s10853-015-9364-7

4. A detailed insight into the preparation of nanocrystalline TiO2 powders in supercritical carbon dioxide

Author:
A. Hertz; M. Drobek; J.-C. Ruiz; F. Charton; S. Sarrade; C. Guizard; A. Julbe
Source:
Journal of materials science 2017 v.52 no.21 pp. 12635-12652
ISSN:
0022-2461
Subject:
carbon dioxide; hydrodynamics; mixing; nanocrystals; nanoparticles; photocatalysis; pollutants; porous media; powders; solvents; surface area; temperature; titanium dioxide
Abstract:
... This work reports detailed investigations for the preparation of nanostructured titania powders by a solvent-free sol–gel-derived process, operated in supercritical CO₂ (SC-CO₂) at high pressures (10–30 MPa) and large range of temperatures (373–823 K). Depending on the processing temperature, the reaction between Ti(OiPr)₄ and water performed in a single supercritical phase led to the formation of ...
DOI:
10.1007/s10853-017-1398-6

5. A facile approach to synthesize in situ functionalized graphene oxide/epoxy resin nanocomposites: mechanical and thermal properties

Author:
Gang Xue; Bin Zhang; Jiye Xing; Mingming Sun; Xugang Zhang; Jianhui Li; Lei Wang; Caizhao Liu
Source:
Journal of materials science 2019 v.54 no.22 pp. 13973-13989
ISSN:
0022-2461
Subject:
epoxides; evaporation; glass transition temperature; graphene oxide; hydrophilicity; hydrophobicity; mixing; modulus of elasticity; nanocomposites; polymers; solvents; tensile strength; thermal stability; thermogravimetry
Abstract:
... The complex preparation processes of GO/polymer composites are a limitation for their application. In this study, epoxy composites filled with in situ functionalized graphene oxide (GO) were prepared by a facile wet mixing and solvent evaporation method. The structure and composition of 3′,4′-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate (2021P)-functionalized GO (GO-2021P) were characteri ...
DOI:
10.1007/s10853-019-03901-1

6. A green route approach to the synthesis of Ni(II) and Zn(II) templated metal–organic frameworks

Author:
Adedibu C. Tella; Samson O. Owalude
Source:
Journal of materials science 2014 v.49 no.16 pp. 5635-5639
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; databases; fumaric acid; heat; manufacturing; mixing; nickel; sustainable technology; zinc
Abstract:
... A new synthetic route involving mixing of solid reactants followed by heating has been developed for the preparation of two templated metal–organic frameworks (MOFs). [Ni(NO₃)₂(bipy)₂](pyrene)₂(1) was obtained by mixing together Ni(NO₃)₂·6H₂O, 4,4-bipyridine and pyrene followed by heating at 85 °C for 4 h, while [Zn₂(fumarate)₂(bipy)] (2) was synthesized by mixing together Zn(O₂CCH₃)₂·2H₂O, fumari ...
DOI:
10.1007/s10853-014-8277-1

7. A novel MWCNT/nanotubular TiO2(B) loaded with SnO2 nanocrystals ternary composite as anode material for lithium-ion batteries

Author:
Jiao Zheng; Daqian Ma; Xiangfeng Wu; Peng Dou; Zhenzhen Cao; Chao Wang; Xinhua Xu
Source:
Journal of materials science 2017 v.52 no.6 pp. 3016-3027
ISSN:
0022-2461
Subject:
anodes; electrochemistry; lithium; lithium batteries; mixing; nanocrystals; nanosheets; nanotubes; synergism; tin dioxide; titanium dioxide
Abstract:
... A novel MWCNT/long nanotubular TiO₂(B) loaded with SnO₂ nanocrystals (SnO₂NC/TiO₂(B)NT/MWCNT) ternary composite has been prepared by two-step hydrothermal method and used as the anode material for the first time. In this work, the mechanical stirring improved the diffusion and surface reaction rates of reactants and promoted the appearance of longer intermediate TiO₂(B) nanosheets, leading to the ...
DOI:
10.1007/s10853-016-0578-0

8. A novel approach to produce Al-alloy foams

Author:
X. Fang; Z. Fan
Source:
Journal of materials science 2007 v.42 no.18 pp. 7894-7898
ISSN:
0022-2461
Subject:
alloys; aluminum; aluminum oxide; foaming; foams; microstructure; mixing; nitrogen; researchers; slurries; turbulent flow; viscosity
Abstract:
... The stability of Al foams during processing is crucial to producing uniform Al foams. Once pores form during processing, no matter which conventional methods are used, the pores grow and/or merge into large ones, which could cause Al foams to “collapse”. Therefore, it has attracted great attention of researchers to enhance the stability of Al foams during processing for improved quality of Al foam ...
DOI:
10.1007/s10853-007-1729-0

9. A simple chemical treatment for easy dispersion of carbon nanotubes in epoxy matrix for improving mechanical properties

Author:
Anil Suri; Santosh Kumar Yadav; Aravind Dasari
Source:
Journal of materials science 2016 v.51 no.24 pp. 10775-10781
ISSN:
0022-2461
Subject:
Raman spectroscopy; carbon nanotubes; chemical treatment; epoxides; ethanol; mixing; polymers; sodium hydroxide; solvents; tensile strength; ultrasonic treatment; ultrasonics
Abstract:
... Carbon nanotubes have considerable potential for use as reinforcements in high-performance polymer composites, but their large-scale application has been hindered by their poor processability. Here, we report an extremely simple and scalable method for the chemical treatment of single-wall carbon nanotubes (SWNTs) to enable easy dispersion in an epoxy matrix. The treatment involves stirring SWNTs ...
DOI:
10.1007/s10853-016-0289-6

10. A simple way to prepare a precursor for ZrC–SiC ceramics

Author:
Yong Li; Si’an Chen; Xin Ma; Guangde Li; Haifeng Hu; Yudi Zhang
Source:
Journal of materials science 2016 v.51 no.11 pp. 5160-5169
ISSN:
0022-2461
Subject:
carbon; ceramics; cost effectiveness; crosslinking; mixing; modulus of rupture; pyrolysis; silicon; silicon carbide; temperature; zirconium
Abstract:
... For cost reduction and process simplification, a homogenous liquid precursor for zirconium carbide (ZrC)–SiC ceramics was prepared by blending Zr(OC₄H₉)₄, divinylbenzene, and polycarbosilane (PCS). The mixture was cross-linked at 150 °C, decomposed to ZrO₂, carbon, and SiC at 800 °C, and then ZrO₂ and carbon reacted with each other via carbo-thermal reaction at 1500 °C to form ZrC–SiC ceramics tha ...
DOI:
10.1007/s10853-016-9818-6

11. A1-L12 interfacial free energies from data on coarsening in five binary Ni alloys, informed by thermodynamic phase diagram assessments

Author:
Alan J. Ardell
Source:
Journal of materials science 2011 v.46 no.14 pp. 4832-4849
ISSN:
0022-2461
Subject:
Gibbs free energy; alloys; aluminum; crystal structure; energy; equations; gallium; germanium; growth models; mixing; nickel; particle size; particle size distribution; physical phases; silicon; solutes; titanium
Abstract:
... The data on coarsening of γ′-type precipitates (Ni₃X, with the L1₂ crystal structure) in Ni–Al, Ni–Ga, Ni–Ge, Ni–Si, and Ni–Ti alloys are re-evaluated in the context of recent (TIDC) and classical (LSW) theories of coarsening, with the objective of ascertaining the best values possible of interfacial free energies, σ, of the γ/γ′ interfaces in these five alloy systems. The re-evaluations include f ...
DOI:
10.1007/s10853-011-5395-x

12. ALCHEMI studies of site occupancies in Cr-, Ni-, and Fe-substituted manganese cobaltite spinels

Author:
Louis V. Gambino; Alex B. Freeman; Neal J. Magdefrau; Mark Aindow
Source:
Journal of materials science 2016 v.51 no.1 pp. 158-170
ISSN:
0022-2461
Subject:
X-radiation; cations; ceramics; chromium; cobalt; iron; manganese; mixing; nickel; powders; stainless steel; temperature; transmission electron microscopes
Abstract:
... The effects of Cr, Ni, and Fe substitution into manganese cobaltite (MCO) spinels are of great interest due to the roles that the diffusion of these cations play in reaction layer development during high temperature exposure of MCO-coated alloys. Here we report a study on a series of model Cr-, Ni-, and Fe-substituted MCO spinel ceramics produced by consolidation of combustion-synthesized oxide po ...
DOI:
10.1007/s10853-015-9307-3

13. Acrylonitrile–butadiene–styrene-toughened polysulphone of bisphenol A blends: influence of processing temperature and composition

Author:
B. E RUIZ DE GAUNA; M GAZTELUMENDI; J NAZABAL
Source:
Journal of materials science 1997 v.32 no.4 pp. 971-977
ISSN:
0022-2461
Subject:
bisphenol A; injection molding; kneading; mechanical properties; mixing; temperature
Abstract:
... Polysulphone of bisphenol A (PSU)/acrylonitrile–butadiene–styrene (ABS) blends have been obtained by direct injection moulding at different temperatures and for compositions in the PSU-rich range. Direct injection moulding provided a mixing level similar to that of kneading. The blends were almost fully immiscible with the exception of the polybutadiene (PBD) phase where some PSU appeared to be pr ...
DOI:
10.1023/A:1018566019772

14. Adsorption characteristic of copper ions and its application in electroless nickel plating on a hydrogel-functionalized poly(vinyl chloride) plastic

Author:
Ming-Qiu Wang; Jun Yan; Shi-Guo Du; Jian-Wei Zeng; Wen-Ping Chang; Yi Guo; Hong-Guang Li
Source:
Journal of materials science 2013 v.48 no.20 pp. 7224-7237
ISSN:
0022-2461
Subject:
X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; adhesion; adsorption; catalysts; chitosan; copper; crosslinking; energy; glutaraldehyde; hydrocolloids; mixing; nanoparticles; nickel; pH; plastics; poly(vinyl chloride); polyethylene glycol; scanning electron microscopy; temperature
Abstract:
... A facile and palladium-free process for the electroless plating on poly(vinyl chloride) (PVC) plastic has been demonstrated. The process is based on the Cu adsorption capacity of semi-interpenetrating polymer network (semi-IPN) hydrogel chemically bonded to PVC surface via a simple and one-step approach that applying a chitosan/polyethylene glycol/glutaraldehyde system under mild stirring at room ...
DOI:
10.1007/s10853-013-7539-7

15. Adsorption characteristics of noble metals on the strongly basic anion exchanger Purolite A-400TL

Author:
A. Wołowicz; Z. Hubicki
Source:
Journal of materials science 2014 v.49 no.18 pp. 6191-6202
ISSN:
0022-2461
Subject:
gold; platinum; aqueous solutions; mixing; sodium hydroxide; resins; ammonium hydroxide; palladium; gels; hydrochloric acid; thiourea; anion exchange; anion exchange capacity; temperature; metal ions; desorption; adsorption
Abstract:
... Ion exchange is an alternative process for uptake of noble metals from aqueous solutions. In the present study, the sorption of Pd(II), Pt(IV), and Au(III) ions from aqueous solution was investigated by using Purolite A-400TL (strongly basic anion exchanger, gel, type I) in a batch adsorption system as a function of time (1 min–4 h). Initial Pd(II) concentration (100–1000 mg/L), beads size (0.425– ...
DOI:
10.1007/s10853-014-8333-x

16. Air-processed, large grain perovskite films with low trap density from perovskite crystal engineering for high-performance perovskite solar cells with improved ambient stability

Author:
Manman Ding; Leijie Sun; Xiayan Chen; Tianyuan Luo; Tian Ye; Chunyan Zhao; Wenfeng Zhang; Haixin Chang
Source:
Journal of materials science 2019 v.54 no.18 pp. 12000-12011
ISSN:
0022-2461
Subject:
air; encapsulation; engineering; mixing; relative humidity; solar cells
Abstract:
... High-performance perovskite solar cell processed in ambient air is a big challenge due to the sensitivity of perovskite films to air. Many defects are generated easily at grain boundaries and in the perovskite films by conventional molecular/ion precursor solution mixing methods (i.e., solution mixing-based method), which restrict its stability in air and photovoltaic performance with most power c ...
DOI:
10.1007/s10853-019-03768-2

17. An effective strategy to develop nanostructured morphology and enhanced physico-mechanical properties of PP/EPDM thermoplastic elastomers

Author:
Shib Shankar Banerjee; Anil K. Bhowmick
Source:
Journal of materials science 2016 v.51 no.14 pp. 6722-6734
ISSN:
0022-2461
Subject:
crystal structure; deformation; industry; melting; mixing; polypropylenes; rubber; temperature; tensile strength; thermal stability; thermoplastics; viscoelasticity
Abstract:
... The present work reports the preparation of nanostructured thermoplastic elastomeric blends (TPEs and TPVs) based on polypropylene (PP)/ethylene-propylene-diene rubber (EPDM) by a novel processing technique, where well-dispersed nanoscale EPDM particles (~40–100 nm) in the PP matrix were obtained after mixing at 180 °C at 50 s⁻¹ and subsequent micro-injection molding at high melt shear rate (500–7 ...
DOI:
10.1007/s10853-016-9959-7

18. Analysis of gas sensing behaviors of carbon black/waterborne polyurethane composites in low concentration organic vapors

Author:
Bin Zhao; Ruo Wen Fu; Ming Qiu Zhang; Bin Zhang; Wei Zeng; Min Zhi Rong; Qiang Zheng
Source:
Journal of materials science 2007 v.42 no.12 pp. 4575-4580
ISSN:
0022-2461
Subject:
absorption; latex; mixing; models; polyurethanes; solvents; soot; temperature; vapor pressure; vapors
Abstract:
... Conductive composite comprised of carbon black and waterborn polyurethane was prepared by latex blending. It exhibited sensitivity to non-polar solvent vapors and polar solvent vapors as a result of the microphase separation structure of polyurethane. By studying the electrical response and absorption behaviors of the composite in low vapor pressure, a model based on Flory–Huggins principle was pr ...
DOI:
10.1007/s10853-006-0517-6

19. Analyzing the frequency and temperature dependences of the ac conductivity and dielectric analysis of reduced graphene oxide/epoxy polymer nanocomposites

Author:
Y. Nioua; S. El Bouazzaoui; B. M. G. Melo; P. R. S. Prezas; M. P. F. Graça; M. E. Achour; L. C. Costa; C. Brosseau
Source:
Journal of materials science 2017 v.52 no.24 pp. 13790-13798
ISSN:
0022-2461
Subject:
temperature; electrical conductivity; mixing; equations; polymer nanocomposites; graphene oxide; epoxides; polymers; nanoparticles
Abstract:
... A series of composite materials was fabricated by mixing reduced graphene oxide (rGO) powder particles in an epoxy resin. In this paper, we analyze impedance measurements on these materials over broad frequency and temperature ranges. The real and imaginary parts of the effective complex impedance are well fitted to the Cole–Cole equation. The frequency dependence of the ac conductivity follows Jo ...
DOI:
10.1007/s10853-017-1462-2

20. Assessment of durability of recycled aggregate concrete produced by two-stage mixing approach

Author:
Vivian W. Y. Tam; C. M. Tam
Source:
Journal of materials science 2007 v.42 no.10 pp. 3592-3602
ISSN:
0022-2461
Subject:
air; concrete; deformation; durability; landfills; mixing; permeability; porosity; recycling; shrinkage; wastes; water uptake; China
Abstract:
... As more than 50% construction and demolition (C&D) wastes are composed of concrete debris in Hong Kong, recycling this debris into Recycled Aggregate (RA) for production of Recycled Aggregate Concrete (RAC) is an efficient way to alleviate the burden on landfill areas. Since RA is generated from concrete debris which has undergone years of services, the resulting RAC bears the weaknesses of lower ...
DOI:
10.1007/s10853-006-0379-y

21. Atomic interactions in C15 Laves phases

Author:
J.-C. Crivello; J.-M. Joubert; T. Mohri
Source:
Journal of materials science 2019 v.54 no.6 pp. 4742-4753
ISSN:
0022-2461
Subject:
copper; density functional theory; magnesium; mixing; temperature; thermodynamic models
Abstract:
... The C15 phase ([Formula: see text]) has been extensively studied by several methodologies to evaluate its atomic interactions. Ideally ordered at the [Formula: see text] composition, this Laves phase is known to present a non-stoichiometry domain accommodated by substitutional atomic disorder at high temperature. With the Cu–Mg system as an example, a cluster expansion method study revealed that f ...
DOI:
10.1007/s10853-018-3169-4

22. Bacterial cellulose whisker as a reinforcing filler for carboxylated acrylonitrile-butadiene rubber

Author:
Jingyi Wang; Hongbing Jia; Jiajia Zhang; Lingfeng Ding; Yang Huang; Dongping Sun; Xuedong Gong
Source:
Journal of materials science 2014 v.49 no.17 pp. 6093-6101
ISSN:
0022-2461
Subject:
X-ray diffraction; acid hydrolysis; cellulose; crystal structure; glass transition temperature; latex; mixing; nanofibers; rubber; storage modulus; tensile strength; transmission electron microscopy
Abstract:
... Bacterial cellulose whisker (BCW) reinforced carboxylated acrylonitrile-butadiene rubber (xNBR) vulcanizates were fabricated by mixing BCW suspension with xNBR latex, followed by coagulating and vulcanization. The BCW, prepared from acid hydrolysis of bacterial cellulose, has as rod-like nanofiber structure according to transmission electron microscopy. BCW maintained its crystal structure in BCW/ ...
DOI:
10.1007/s10853-014-8336-7

23. Ball milling as a way to produce magnetic and magnetocaloric materials: a review

Author:
J. S. Blázquez; J. J. Ipus; L. M. Moreno-Ramírez; J. M. Álvarez-Gómez; D. Sánchez-Jiménez; S. Lozano-Pérez; V. Franco; A. Conde
Source:
Journal of materials science 2017 v.52 no.20 pp. 11834-11850
ISSN:
0022-2461
Subject:
magnetic materials; microstructure; milling; mixing
Abstract:
... Ball milling (BM) is a well-established technique for producing different materials in powder shape. Dynamical analysis of BM helps to optimize the process through simple but general relations (e.g., definition of an equivalent milling time). Concerning the field of study of magnetocaloric effect (MCE), BM is used in different ways: as a single step process (mechanical alloying), as an initial ste ...
DOI:
10.1007/s10853-017-1089-3

24. Beach sand from Cancun Mexico: a natural macro- and mesoporous material

Author:
Hui Chen; Jinhai Wang; Zia ur Rahman; James G. Worden; Xiong Liu; Qiu Dai; Qun Huo
Source:
Journal of materials science 2007 v.42 no.15 pp. 6018-6026
ISSN:
0022-2461
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; adhesion; aragonite; biocompatible materials; calcite; calcium carbonate; chemical composition; composite materials; crystal structure; filtration; mixing; nanogold; pollution control; polymethylmethacrylate; porous media; sand; scanning electron microscopy; sorption isotherms; spectral analysis; surface area; transmission electron microscopy; Florida; Mexico
Abstract:
... Sand particles from Cancun, Mexico were studied using a number of advanced spectroscopic and microscopic techniques. The main chemical composition of sand particles was confirmed to be calcium carbonate by X-ray photoelectron spectroscopy and IR spectroscopic analysis. X-ray diffraction analysis revealed that the sand particles are aragonite, which has an Orthorhombic—Dipyramidal crystal structure ...
DOI:
10.1007/s10853-006-0970-2

25. Blend membranes from poly(2,5-benzimidazole) and poly(styrene sulfonic acid) as proton-conducting polymer electrolytes for fuel cells

Author:
Oktay Acar; Unal Sen; Ayhan Bozkurt; Ali Ata
Source:
Journal of materials science 2010 v.45 no.4 pp. 993-998
ISSN:
0022-2461
Subject:
fuel cells; thermogravimetry; electrolytes; mixing; styrene; dielectric spectroscopy; ambient temperature; differential scanning calorimetry; Fourier transform infrared spectroscopy; spectral analysis; polymers; sulfonic acids; water uptake; scanning electron microscopes; thermal properties
Abstract:
... Polymer electrolyte membranes were fabricated by blending of poly(2,5-benzimidazole) (ABPBI) and poly(styrene sulfonic acid) (PSSA) at several molar ratios with respect to repeating units. Fourier transform infrared spectroscopy was used to elucidate inter-polymer interactions. Surface morphology was studied through scanning electron microscope. Thermal properties of the membranes were investigate ...
DOI:
10.1007/s10853-009-4030-6

26. Blending PLLA/tannin-grafted PCL fiber membrane for skin tissue engineering

Author:
Suchen Jiang; Ping Song; Huiling Guo; Xue Zhang; Yajun Ren; Huanchao Liu; Xiaofeng Song; Mingming Kong
Source:
Journal of materials science 2017 v.52 no.3 pp. 1617-1624
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; biocompatibility; biodegradability; crystal structure; mixing; polylactic acid; tensile strength; thermodynamics; tissue engineering; wettability
Abstract:
... To create novel materials of skin tissue engineering, the blends of tannin-grafted poly(ɛ-caprolactone) (TA-g-PCL) and poly(L-lactic acid) (PLLA) have been prepared by electrospinning, and their corresponding characteristics are evaluated such as morphology, FTIR, thermodynamics, mechanics, wettability, as well as biocompatibility. TA-g-PCL and PLLA can be well blended to make smooth fibers, and f ...
DOI:
10.1007/s10853-016-0455-x

27. Blending and oxygen permeation properties of the blown films of blends of modified polyamide and ethylene vinyl alcohol copolymer with varying vinyl alcohol contents

Author:
Jen-Taut Yeh; Heng-Yi Chen
Source:
Journal of materials science 2007 v.42 no.14 pp. 5742-5751
ISSN:
0022-2461
Subject:
alcohols; chemical interactions; composite polymers; mixing; oxygen; permeability; polyamides
Abstract:
... The oxygen permeation and blending properties of the MPAEVOH blends of modified polyamide (MPA) and ethylene vinyl alcohol copolymer (EVOH) with varying vinyl alcohol contents were systematically investigated in this study. The oxygen permeation rates of EVOH film specimens are dramatically slower than that of the PE specimen and reduce significantly as their vinyl alcohol contents increase. After ...
DOI:
10.1007/s10853-006-0555-0

28. Blending properties of poly(vinyl alcohol) and nylon 6-clay nanocomposite blends

Author:
Jen-Taut Yeh; Peng Xu; Fang-Chang Tsai
Source:
Journal of materials science 2007 v.42 no.16 pp. 6590-6599
ISSN:
0022-2461
Subject:
X-ray diffraction; clay; crystals; endothermy; hydrogen bonding; melting; mixing; moieties; nanocomposites; nylon; polyvinyl alcohol; resins; tensile strength
Abstract:
... An investigation of the blending, rheological and tensile properties of poly(vinyl alcohol) (PVA) and nylon 6 clay (NYC) nanocomposite blends was conducted. The characteristics of melting endotherm, X-ray diffraction patterns of α form PVA crystals and hydrogen-bonded hydroxyl groups originally associated with the PVA resin almost disappear after blending less than 16.7 wt% of PVA in NYC resins. H ...
DOI:
10.1007/s10853-007-1500-6

29. Bright red-emitting polymer dots for specific cellular imaging

Author:
Wei Zhang; Hang Sun; Shengyan Yin; Jingjing Chang; Yanhui Li; Xingyuan Guo; Zhen Yuan
Source:
Journal of materials science 2015 v.50 no.16 pp. 5571-5577
ISSN:
0022-2461
Subject:
absorption; aqueous solutions; fluorescence; image analysis; light scattering; mixing; nanoparticles; polymers; quantum dots; solvents; spectroscopy; transmission electron microscopy; wavelengths
Abstract:
... A new conjugated polymer, poly[{2-methoxy-5-(2-ethylhexyloxy)-1,4-(1-cyanovinylphenylene)}-alt-co-{2,5-bis(N,N′-diphenylamino)-1,4-phenylene}] (DB-CN-PPV), with strong UV absorption and high fluorescence in red wavelength region, is self-assembled into nanoparticles (polymer dots, Pdots) in aqueous solution upon rapid mixing of the organic solution with water. Different-sized Pdots were obtained b ...
DOI:
10.1007/s10853-015-9104-z

30. Calcination of UV shielding nanopowder and its effect on weather resistance property of polyurethane nanocomposite films

Author:
Bapan Adak; B. S. Butola; Mangala Joshi
Source:
Journal of materials science 2019 v.54 no.19 pp. 12698-12712
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; atomic force microscopy; crystal structure; energy-dispersive X-ray analysis; melting; mixing; nanocomposites; nanoparticles; particle size; polyurethanes; synergism; tensile strength; titanium dioxide; transmission electron microscopy; weather; weathering; zinc oxide
Abstract:
... In this study, the synergistic effect of ZnO nanoparticles in combination with two different crystal phases of TiO₂ nanoparticles on improving weather resistance property of polyurethane (PU) film has been studied. The UV shielding nanopowder containing TiO₂ and ZnO nanoparticles was calcinated at varying conditions, and the process was optimized to obtain the desired crystal structure. After calc ...
DOI:
10.1007/s10853-019-03739-7

31. Calcium orthophosphate cements for biomedical application

Author:
Sergey V. Dorozhkin
Source:
Journal of materials science 2008 v.43 no.9 pp. 3028-3057
ISSN:
0022-2461
Subject:
bioactive properties; biocompatible materials; biodegradability; bone formation; bone fractures; calcium; hydroxyapatite; mixing; orthophosphates; researchers
Abstract:
... In early 1980s, researchers discovered self-setting calcium orthophosphate cements, which are a bioactive and biodegradable grafting material in the form of a powder and a liquid. Both phases after mixing form a viscous paste that after being implanted sets and hardens within the body as either a non-stoichiometric calcium deficient hydroxyapatite (CDHA) or brushite, sometimes blended with unreact ...
DOI:
10.1007/s10853-008-2527-z

32. Carbon dioxide adsorption using amine-functionalized mesocellular siliceous foams

Author:
Juanjuan Ma; Qiming Liu; Dandan Chen; Yuan Zhou; Sheng Wen
Source:
Journal of materials science 2014 v.49 no.21 pp. 7585-7596
ISSN:
0022-2461
Subject:
adsorption; amines; carbon dioxide; foams; mixing; temperature
Abstract:
... Mesocellular siliceous foams (MCFs) with and without remaining template were prepared and modified by polyethylenimine (PEI) or mixed amines [Diethylenetriamine and PEI or 3-aminopropyltrimethoxysilane (APTMS) and PEI]. These samples were evaluated for their adsorption capacities for CO₂at different temperatures. With the increase of PEI loading, the optimal adsorption temperature shifts to higher ...
DOI:
10.1007/s10853-014-8467-x

33. Ceramic matrix composites prepared from CoAl powders

Author:
S. F. Tikhov; A. S. Andreev; A. N. Salanov; S. V. Cherepanova; O. B. Lapina; V. A. Sadykov; Yu. Yu. Tanashev; V. A. Bolotov
Source:
Journal of materials science 2016 v.51 no.23 pp. 10487-10498
ISSN:
0022-2461
Subject:
X-ray diffraction; absorption; air; alloys; aluminum; aluminum hydroxide; aluminum oxide; catalysts; ceramics; cobalt; dehydrogenation; energy-dispersive X-ray analysis; hexane; hot water treatment; microwave treatment; mixing; nuclear magnetic resonance spectroscopy; oxidation; porosity; powders; scanning electron microscopy; stable isotopes
Abstract:
... Multiscale structure of two Co ₓ Al y O z cermets was examined by a combination of XRD, SEM coupled with EDX, NMR (⁵⁹Co; ²⁷Al), and textural measurements. A strong CoAlO/CoAl cermet monolith prepared by mechanical alloying of Co and Al powders followed by hydrothermal treatment and calcination in air comprised two parts: the metal core consisting of Co and a Co–Al alloy, and the outer oxide matrix ...
DOI:
10.1007/s10853-016-0268-y

34. Change of local structures for 0.5Li2MnO3–0.5LiMn1/3Ni1/3Co1/3O2 in first charge process of different rates

Author:
Yasushi Idemoto; Takuya Sekine; Naoya Ishida; Naoto Kitamura
Source:
Journal of materials science 2017 v.52 no.14 pp. 8630-8649
ISSN:
0022-2461
Subject:
X-radiation; cations; cobalt; crystal structure; geometry; manganese; mixing; models
Abstract:
... An investigation was carried out into the charging rate dependence of local structural changes in a layered 0.5Li₂MnO₃–0.5LiMn₁/₃Ni₁/₃Co₁/₃O₂ solid solution during the initial charging cycle. To clarify the mechanism involved in local atomic rearrangement, a pair distribution function (PDF) analysis was performed using the results of powder neutron diffraction and synchrotron X-ray total scatterin ...
DOI:
10.1007/s10853-017-1088-4

35. Characterization of an oxalate-phosphate-amine metal–organic framework (OPA-MOF) exhibiting properties suited for innovative applications in agriculture

Author:
Manuela Anstoetz; Neeraj Sharma; Malcolm Clark; Lachlan H. Yee
Source:
Journal of materials science 2016 v.51 no.20 pp. 9239-9252
ISSN:
0022-2461
Subject:
acidification; ammonium compounds; coordination polymers; elemental composition; fertilizer application; iron; mineral fertilizers; mineralization; mixing; nickel; oxalates; powders; scanning electron microscopy; soil fertility; soil nutrients; solubility; transposons; urea
Abstract:
... Targeting an innovative application for metal–organic frameworks (MOFs) in agriculture, a hydrothermal method is employed to synthesize two compounds of urea-templated iron-based oxalate-phosphate-amine MOFs, OPA-MOF (I) and (II). The compounds, forming powders of highly crystalline masses of platy morphology, crystallize in the orthorhombic system with space group Pccm and subtly different unit c ...
DOI:
10.1007/s10853-016-0171-6

36. Characterization of maxillofacial silicone elastomer reinforced with different hollow microspheres

Author:
Qi Liu; Longquan Shao; Haosen Fan; Yuhua Long; Ning Zhao; Shuguang Yang; Xiaoli Zhang; Jian Xu
Source:
Journal of materials science 2015 v.50 no.11 pp. 3976-3983
ISSN:
0022-2461
Subject:
hardness; mixing; prostheses; silicone; tensile strength
Abstract:
... The composition and properties of silicone–hollow microsphere composites were studied in view of establishing a new type of maxillofacial prosthesis material. Two types of microspheres were used in different concentrations and were well dispersed in the silicone matrix. The mechanical properties of the composites were evaluated. Expancel hollow microspheres improve the density, Shore A hardness, a ...
DOI:
10.1007/s10853-015-8953-9

37. Chitosan-derived hybrid porous carbon with the novel tangerine pith-like surface as supercapacitor electrode

Author:
Mengying Yuan; Yunqiang Zhang; Ben Niu; Feng Jiang; Xuena Yang; Mei Li
Source:
Journal of materials science 2019 v.54 no.23 pp. 14456-14468
ISSN:
0022-2461
Subject:
acetic acid; capacitance; carbon; carbon electrodes; chitosan; electrochemistry; electrolytes; energy density; gelatin; micropores; mixing; nitrogen; nitrogen content; potassium bicarbonate; potassium hydroxide; surface area; tangerines
Abstract:
... A novel hybrid porous carbon has been synthesized by a facile method blending chitosan with gelatin in acetic acid solution. Gelatin changes the morphology of the chitosan-derived carbon materials and produces abundant micro- and mesopores with the help of KHCO₃. More importantly, gelatin brings heteroatoms and pseudo-capacitance into hybrids to improve the capacitive performance as the nitrogen s ...
DOI:
10.1007/s10853-019-03911-z

38. Cold crystallization studies on PET/PEN blends as revealed by microhardness

Author:
M. T CONNOR; M. C. GARCIA GUTIERREZ; D. R RUEDA; F. J. BALTA CALLEJA
Source:
Journal of materials science 1997 v.32 no.21 pp. 5615-5620
ISSN:
0022-2461
Subject:
coprecipitation; crystallization; equations; glass transition temperature; mixing; models; polyethylene terephthalates; transesterification
Abstract:
... The cold crystallization of amorphous films of poly(ethylene terephthalate) (PET) and poly(ethylene naphthalene-2,6-dicarboxylate) (PEN) blends, with different composition, prepared by co-precipitation from solution followed by melt-pressing for 2 min at 280°C and quenching in ice-water, was followed by measuring the microhardness, H, in real time as a function of crystallization temperature and t ...
DOI:
10.1023/A:1018636810647

39. Compatibility studies of natural rubber/poly(methyl methacrylate) blends by viscometry and phase separation techniques

Author:
Z Oommen; S Thomas
Source:
Journal of materials science 1997 v.32 no.22 pp. 6085-6094
ISSN:
0022-2461
Subject:
composite polymers; emulsifiers; equations; heat; mixing; molecular weight; polymethylmethacrylate; rubber; separation; solvents; spectroscopy; viscometry; viscosity
Abstract:
... The compatibility of binary blends of natural rubber (NR) and poly(methyl methacrylate) (PMMA) has been analysed from the viscosity behaviour. For this, the equations developed by both Krighbaum and Wall, and their modified forms by Williamson and Wright, were used. The interaction between polymers in solution has been interpreted qualitatively based on the heat of mixing (ΔH) and interaction para ...
DOI:
10.1023/A:1018643901503

40. Complex permittivity and electromagnetic interference shielding properties of Ti3SiC2/polyaniline composites

Author:
Suilin Shi; Lingzhen Zhang; Junshou Li
Source:
Journal of materials science 2009 v.44 no.4 pp. 945-948
ISSN:
0022-2461
Subject:
dielectric permittivity; electrical conductivity; electromagnetic interference; electromagnetic radiation; mixing; polymers
Abstract:
... Ti₃SiC₂/insulating polyaniline (Ti₃SiC₂/PANI) composites were prepared by solution blending and subsequently by hot-pressing process. The dielectric permittivity and electromagnetic interference (EMI) shielding effectiveness (SE) of the composites were determined in the frequency range of 8.2–12.4 GHz (X-band). Both real and imaginary permittivities increase with the increasing Ti₃SiC₂ content, an ...
DOI:
10.1007/s10853-008-3207-8

41. Compressive mechanical properties and deformation behavior of porous polymer blends of poly(ε-caprolactone) and poly(L-lactic acid)

Author:
Joo-Eon Park; Mitsugu Todo
Source:
Journal of materials science 2011 v.46 no.24 pp. 7850-7857
ISSN:
0022-2461
Subject:
biodegradability; deformation; mechanical properties; mechanical testing; mixing; modulus of elasticity; polylactic acid; separation; tissue engineering
Abstract:
... Porous biodegradable polymeric scaffolds are developed by physically blending two different kinds of biodegradable polymers, PCL, and PLLA, for application in tissue engineering. The main objective of the development of this material is to control the mechanical properties, such as, elastic modulus and strength. The results from mechanical testing showed that the compressive mechanical properties ...
DOI:
10.1007/s10853-011-5766-3

42. Computation of interface interactions and mechanical properties of HMX-based PBX with Estane 5703 from atomic simulation

Author:
Jijun Xiao; Hui Huang; Jinshan Li; Hang Zhang; Wei Zhu; Heming Xiao
Source:
Journal of materials science 2008 v.43 no.17 pp. 5685-5691
ISSN:
0022-2461
Subject:
electrostatic interactions; engineering; hydrogen bonding; mechanical properties; mixing; polymers
Abstract:
... Atomic simulation was applied to investigate the interface interactions and mechanical properties of β-octahydro-1, 3, 5, 7-tetranitro-1, 3, 5, 7-tetrazocine (HMX)-based polymer-bonded explosive (PBX) with Estane 5703. The interface structure of HMX (100) crystal surface with Estane 5703 was analyzed using pair correlation function (PCF), and the interfacial binding energies between them were calc ...
DOI:
10.1007/s10853-008-2704-0

43. Computational thermodynamics of Sc–Zr and Sc–Ti alloys using cluster variation method

Author:
Shrikant Lele; B. Nageswara Sarma
Source:
Journal of materials science 2009 v.44 no.9 pp. 2334-2342
ISSN:
0022-2461
Subject:
alloys; enthalpy; entropy; mixing; physical phases; scandium; temperature; titanium; zirconium
Abstract:
... The cluster expansion method (for configurational enthalpy of mixing) and cluster variation method (for configurational entropy of mixing) (CE–CVM) together offer a systematic hierarchy of approximations for representation of phase diagram, thermochemical, thermophysical and structural data as opposed to the traditional CALPHAD methods which neglect the effects of local order and vibrational and e ...
DOI:
10.1007/s10853-008-3197-6

44. Copolymerization strategy to prepare polymethyl methacrylate-based copolymer with broad-band ultraviolet shielding and luminescent down-shifting properties

Author:
Junxian Huang; Heng Chen; Beibei Hao; Wei Dai; Shaojun Chen
Source:
Journal of materials science 2019 v.54 no.23 pp. 14624-14633
ISSN:
0022-2461
Subject:
blue light; composite polymers; copolymerization; luminescence; mixing; nuclear magnetic resonance spectroscopy; polymethylmethacrylate; thermal stability; thermogravimetry; ultraviolet radiation; ultraviolet-visible spectroscopy
Abstract:
... In this contribution, copolymerization strategy was reported to prepare polymethyl methacrylate (PMMA)-based ultraviolet (UV) shielding copolymers where polymerizable UV absorbers were synthesized and further copolymerized with methyl methacrylate. The copolymer was characterized by ¹H NMR, GPC, TGA, and UV–Vis spectroscopy. The prepared copolymer was found to exhibit high thermal stability compar ...
DOI:
10.1007/s10853-019-03961-3

45. Coupled thermo-mechanical model based comparison of friction stir welding processes of AA2024-T3 in different thicknesses

Author:
Z. Zhang; J. T. Chen; Z. W. Zhang; H. W. Zhang
Source:
Journal of materials science 2011 v.46 no.17 pp. 5815-5821
ISSN:
0022-2461
Subject:
deformation; energy; finite element analysis; friction; heat transfer; materials science; mixing; models; temperature; welding
Abstract:
... A fully coupled thermo-mechanical finite element model was used to study the friction stir welding process of AA2024-T3 in different thicknesses. The computational results show that the material flows on the retreating and the front sides are higher. So, the slipping rates on the retreating and the front sides are lower than the ones on the trailing and advancing sides. This is the reason that the ...
DOI:
10.1007/s10853-011-5537-1

46. Cross-linked fully aromatic sulfonated polyamide as a highly efficiency polymeric filler in SPEEK membrane for high methanol concentration direct methanol fuel cells

Author:
Cuicui Li; Yunfeng Zhang; Xupo Liu; Jiaming Dong; Jiaying Wang; Zehui Yang; Hansong Cheng
Source:
Journal of materials science 2018 v.53 no.7 pp. 5501-5510
ISSN:
0022-2461
Subject:
crosslinking; dimensional stability; fuel cells; hydrogen bonding; methanol; methanol fuels; mixing; permeability; polyamides
Abstract:
... The current direct methanol fuel cells are still largely limited to the neat methanol operation due to the high methanol permeation of the currently used Nafion membranes. To achieve high methanol concentration DMFC application of the sulfonated poly(ether ether ketone) (SPEEK)-based proton exchange membrane, the neat SPEEK membrane is here modified by blending with the designed cross-linked fully ...
DOI:
10.1007/s10853-017-1945-1

47. Decomposition of Ca : Cu = 1 : 1 nitrate powder: thermal analysis and structural studies

Author:
P. Badica; G. Aldica; A. Crisan
Source:
Journal of materials science 2002 v.37 no.3 pp. 585-594
ISSN:
0022-2461
Subject:
X-ray diffraction; calcium; calcium nitrate; cupric oxide; freeze drying; mixing; powders; temperature; thermal analysis; thermal degradation
Abstract:
... Thermal decomposition processes in mixtures of Ca : Cu = 1 : 1 nitrate powders produced by a conventional technique and by freeze drying method have been investigated by thermal analysis and X-ray diffraction. Results have been compared with literature values and data obtained by our investigations of individual calcium and copper nitrates. Temperatures at which decomposition processes occur chang ...
DOI:
10.1023/A:1013777826319

48. Decoration of Cu nanowires with chemically modified TiO2 nanoparticles for their improved photocatalytic performance

Author:
Yuxin Zhang; Ming Huang; Fei Li; Han Zhao; Zhongquan Wen
Source:
Journal of materials science 2013 v.48 no.19 pp. 6728-6736
ISSN:
0022-2461
Subject:
X-ray diffraction; mixing; copper; photolysis; surface area; titanium dioxide; nanocomposites; nanowires; scanning electron microscopy; Fourier transform infrared spectroscopy; transmission electron microscopy; methyl orange; photocatalysts; nanoparticles
Abstract:
... In this work, TiO₂nanoparticles/Cu nanowires (TiO₂NPs@CuNWs) binary composites with tunable coverage of TiO₂nanoparticles were prepared by a facile method of mixing oleic acid-modified TiO₂nanoparticles with as-prepared Cu nanowires. Characterization studies including X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and high-reso ...
DOI:
10.1007/s10853-013-7474-7

49. Densities of Fe–Ni melts and thermodynamic correlations

Author:
Manabu Watanabe; Masayoshi Adachi; Hiroyuki Fukuyama
Source:
Journal of materials science 2016 v.51 no.7 pp. 3303-3310
ISSN:
0022-2461
Subject:
alloys; correlation; energy; enthalpy; magnetic fields; melting; mixing; temperature; uncertainty
Abstract:
... The densities of liquid Fe–Ni alloys were measured accurately by combination of an electromagnetic levitation technique and a static magnetic field. The static magnetic field suppressed the surface oscillation of the levitated sample droplet, which reduced the experimental uncertainty in the density measurement. Densities were determined over a wide temperature range and included a supercooled reg ...
DOI:
10.1007/s10853-015-9644-2

50. Density and viscosity of ternary Cr–Fe–Ni liquid alloys

Author:
Hidekazu Kobatake; Jürgen Brillo
Source:
Journal of materials science 2013 v.48 no.19 pp. 6818-6824
ISSN:
0022-2461
Subject:
alloys; chromium; enthalpy; iron; mixing; models; temperature; viscometers; viscosity
Abstract:
... The density and viscosity of ternary Cr–Fe–Ni liquid alloys have been investigated over a wide temperature range. The density was measured using electromagnetic levitation as a container-less technique, while viscosity was measured by means of a high-temperature oscillating cup viscometer. Although, the concentration dependence of density shows the influence of the second order (binary) interactio ...
DOI:
10.1007/s10853-013-7487-2