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You searched for: Journal Journal of polymers and the environment Remove constraint Journal: Journal of polymers and the environment Publication Year 2019 Remove constraint Publication Year: 2019 Source 2019 v.27 no.7 Remove constraint Source: 2019 v.27 no.7
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1. Amino-Acid-Modified-Cashew Gum Flocculant: Synthesis, Characterization, and Application

Author:
Klein, Jalma Maria; de Lima, Vanessa Silva; Haack, Michele; da Feira, José Manoel Couto; de Camargo Forte, Maria Madalena
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1465-1474
ISSN:
1566-2543
Subject:
cashew gum; electrostatic interactions; flocculants; flocculation; kaolin; wastewater
Abstract:
... Amphoteric poly(O-methacryloyl-L-serine)-grafted cashew gum (CG-g-P(SerMA)) flocculant was obtained with highly efficient in separation and sequential recovery of kaolin particles from aqueous suspension. The highest flocculation efficiency was achieved with a flocculant synthesized using an O-methacryloyl-L-serine:cashew gum molar ratio of 3:1. The CG-g-P(SerMA) at a dosage of 3.0 mg L⁻¹ resulted ...
DOI:
10.1007/s10924-019-01440-z

2. Application of Novel Adsorbent Prepared by Mucor hiemalis Biomass Impregnated with Calcium Alginate for Removal of Sr2+ from Aqueous Solutions

Author:
Naeimi, Shakiba; Faghihian, Hossein
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1572-1583
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; Mucor hiemalis; X-ray diffraction; adsorbents; adsorption; aqueous solutions; biomass; biosorbents; calcium; calcium alginate; cesium; endothermy; energy-dispersive X-ray analysis; gels; ions; magnesium; models; scanning electron microscopy; sodium; sorption isotherms; streams; strontium; thermodynamics
Abstract:
... In this research, a novel biosorbent was prepared by Mucor hiemalis biomass combined with calcium alginate (Mucor hiemalis/Alg-Ca). The dead biomass was entrapped into alginate gel by curing method in the presence of Ca²⁺ ions. The synthesized biosorbent characterized by XRD, EDAX, BET, FTIR, and SEM techniques was used for removal of Sr²⁺ from aquatic streams under various experimental conditions ...
DOI:
10.1007/s10924-019-01453-8

3. Chemically Modified Chitosan Bio-Sorbents for the Competitive Complexation of Heavy Metals Ions: A Potential Model for the Treatment of Wastewaters and Industrial Spills

Author:
Borsagli, Fernanda Guerra Lima Medeiros; Borsagli, Alessandro
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1542-1556
ISSN:
1566-2543
Subject:
X-ray fluorescence spectroscopy; adsorption; aquatic environment; biosorbents; cadmium; cations; chitosan; chromium; ethanol; heavy metals; kinetics; ligands; metal ions; methanol; models; pH; toxicity; wastewater; water pollution; wavelengths
Abstract:
... Heavy metal pollution of water sources has become one of the most serious environmental and health problems nowadays. Chitosan (CHI) and derivatives can be used in the complexation and adsorption of heavy metals in water. Hence, this study compared the influence of CHI and carboxymethyl chitosan (CMC) ligands on the competitive complexation between toxic heavy metal ions with opposite charges Cr(V ...
DOI:
10.1007/s10924-019-01449-4

4. Development of PBT/Recycled-PET Blends and the Influence of Using Chain Extender

Author:
Nofar, Mohammadreza; Oğuz, Hazal
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1404-1417
ISSN:
1566-2543
Subject:
cooling; crystallization; differential scanning calorimetry; impact strength; melting; mixing; tensile strength; viscoelasticity; viscosity
Abstract:
... In this study, PBT/recycled-PET blends were developed using a twin-screw extruder. A commercial chain extender (Joncryl ADR 4468) was also used to melt mix with PBT/recycled-PET blend systems. Firstly, Joncryl at different loadings was extruded with recycled-PET to explore the influence of branching on melt behavior and crystallization of PET. The effect of blending recycled-PET with PBT on the fi ...
DOI:
10.1007/s10924-019-01435-w

5. Disintegration and Biodegradation in Soil of PBAT Mulch Films: Influence of the Stabilization Systems Based on Carbon Black/Hindered Amine Light Stabilizer and Carbon Black/Vitamin E

Author:
Souza, Patrícia Moraes Sinohara; Coelho, Felipe Mourão; Sommaggio, Lais Roberta Deroldo; Marin-Morales, Maria Aparecida; Morales, Ana Rita
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1584-1594
ISSN:
1566-2543
Subject:
additives; biodegradation; crystal structure; gels; mineralization; molecular weight; mulches; photostability; polymers; soil; soot; stabilizers; vitamin E
Abstract:
... This work characterized the disintegration and biodegradation of aged samples of PBAT films with and without photostabilization additives. The objective is to correlate these processes with properties affected after aging, i.e. molecular weight and gel content. Three different formulations were studied: pure polymer; PBAT with carbon black and hindered amine light stabilizer (HALS) and PBAT with c ...
DOI:
10.1007/s10924-019-01455-6

6. Effect Analysis of Nickel Ferrite (NiFe2O4) and Titanium Dioxide (TiO2) Nanoparticles on CH4/CO2 Gas Permeation Properties of Cellulose Acetate Based Mixed Matrix Membranes

Author:
Shakeel, Iqra; Hussain, Arshad; Farrukh, Sarah
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1449-1464
ISSN:
1566-2543
Subject:
X-ray diffraction; carbon dioxide; cellulose acetate; energy; ferrimagnetic materials; gases; methane; nanoparticles; natural gas; nickel; permeability; polyethylene glycol; scanning electron microscopes; thermogravimetry; titanium dioxide
Abstract:
... Natural gas processing is very important industrial process. Major component of natural gas is methane, which is an increasingly utilized source of energy due to high thermal efficiency, while carbon dioxide act as an impurity and reduces its calorific value. In this research work, effects of nickel ferrite (NiFe₂O₄) and titanium dioxide (TiO₂) nanoparticles on the permeation properties of carbon ...
DOI:
10.1007/s10924-019-01442-x

7. Effect of Natural Glyceryl Tributyrate as Plasticizer and Compatibilizer on the Performance of Bio-Based Polylactic Acid/poly(3-hydroxybutyrate) Blends

Author:
Iglesias Montes, M. L.; D’amico, D. A.; Manfredi, L. B.; Cyras, V. P.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1429-1438
ISSN:
1566-2543
Subject:
color; crystals; glass transition temperature; hydrophobicity; manufacturing; mechanical testing; melting; packing houses; plasticizers; poly-3-hydroxybutyrate; polylactic acid
Abstract:
... Bio-based poly(lactic acid)/poly(3-hydroxybutyrate) (PLA/PHB) films were melt-blended with a natural hydrophobic plasticizer (glyceryl tributyrate, TB) at three different concentrations (10, 15 and 20% by weight per 100 parts of the blends) to study the effect of TB on the final properties of the materials. The pursued aim was to obtain a material with potential use in the packaging industry. Two ...
DOI:
10.1007/s10924-019-01425-y

8. Formulation of Green Particulate Composites from PLA and PBS Matrix and Wastes Deriving from the Coffee Production

Author:
Totaro, Grazia; Sisti, Laura; Fiorini, Maurizio; Lancellotti, Isabella; Andreola, Fernanda N.; Saccani, Andrea
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1488-1496
ISSN:
1566-2543
Subject:
biocomposites; biopolymers; byproducts; coffee beans; contact angle; crop production; crystal structure; fuels; mechanical properties; microstructure; polybutylene succinate; polylactic acid; soil; thermal stability; wastes; water uptake
Abstract:
... Particulate composites based on poly(lactic acid) and poly(butylene succinate) biopolymers have been formulated. Silver skin, the by-product derived from the roasting of coffee beans, has been used as a filler up to a 30 wt% of loading. The microstructure, crystallinity, thermal stability, mechanical properties and water absorption of the derived composites have been investigated. Data so far coll ...
DOI:
10.1007/s10924-019-01447-6

9. High Removal Capacity of Arsenic from Drinking Water Using Modified Magnetic Polyurethane Foam Nanocomposites

Author:
Tamaddoni Moghaddam, Sahebeh; Naimi-Jamal, Mohammad Reza; Rohlwing, Andrew; Hussein, Faten B.; Abu-Zahra, Nidal
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1497-1504
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; arsenic; atomic absorption spectrometry; chemical structure; drinking water; energy-dispersive X-ray analysis; foams; ions; iron oxides; magnetic materials; magnetism; models; nanocomposites; nanoparticles; polymerization; polyurethanes; scanning electron microscopy; sorption isotherms; transmission electron microscopy
Abstract:
... In this study, a novel polyurethane foam (PU) nanocomposite adsorbent based on silane-modified magnetic iron-oxide nanoparticles (Fe₃O₄@APTES) is synthesized via a low cost and simple in situ polymerization method for the removal of arsenic ions from aqueous solutions. The chemical structure and surface morphology of the prepared nanoparticles and adsorbent were characterized using Fourier transfo ...
DOI:
10.1007/s10924-019-01446-7

10. Inhibition of Polyimide Photodegradation by Incorporation of Titanate Nanotubes into a Composite

Author:
Harito, Christian; Bavykin, Dmitry V.; Yuliarto, Brian; Dipojono, Hermawan K.; Walsh, Frank C.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1505-1515
ISSN:
1566-2543
Subject:
Raman spectroscopy; adsorption; brittleness; chemical bonding; cleavage (chemistry); crosslinking; free radicals; hardness; irradiation; light microscopy; methylene blue; moieties; nanotubes; phenol; photolysis; plasticity; polymers; transmission electron microscopy; ultraviolet radiation
Abstract:
... The effect of UV light exposure on the properties of hexafluoroisopropylidene-diphthalic anhydride–oxydianiline (6FDA–ODA) polyimide (PI) and polyimide–titanate nanotube (TiNT/PI) composites has been studied using Raman spectroscopy, optical microscopy, nanoidentation and TEM. The degree of polymer photodegradation was estimated by measuring the change in affinity to a positively charged dye (meth ...
DOI:
10.1007/s10924-019-01443-w

11. Keratin and Chitosan Biosorbents for Wastewater Treatment: A Review

Author:
Saha, Sarthak; Zubair, Muhammad; Khosa, M. A.; Song, Sandra; Ullah, Aman
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1389-1403
ISSN:
1566-2543
Subject:
biocompatible materials; biopolymers; biosorbents; biosorption; chitosan; fauna; flora; green chemistry; heavy metals; human health; industry; keratin; metal ions; minerals; organic matter; surface water; toxicity; wastewater treatment; water pollution; water quality
Abstract:
... Heavy metal ions and their toxic complexes with minerals and organic matter significantly affect the quality of water bodies. Such metallic complexes and excessive minerals are of non-biodegradable nature posing a serious threat to fauna, flora, and human health. Therefore, removal of metal ions and organic matters from water is highly desirable in benign chemistry. Over the years, biomaterials ha ...
DOI:
10.1007/s10924-019-01439-6

12. Micro Crystalline Bamboo Cellulose Based Seaweed Biodegradable Composite Films for Sustainable Packaging Material

Author:
Hasan, M.; Lai, Tze Kiat; Gopakumar, Deepu A.; Jawaid, M.; Owolabi, F. A. T.; Mistar, E. M.; Alfatah, Tata; Noriman, N. Z.; Haafiz, M. K. M.; Abdul Khalil, H. P. S.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1602-1612
ISSN:
1566-2543
Subject:
Gigantochloa; Kappaphycus alvarezii; bamboos; bio-packaging; biodegradability; cellulose; composite films; composite materials; contact angle; macroalgae; packaging materials; permeability; tensile strength; water vapor
Abstract:
... This study is aimed to fabricate and characterize the seaweed- biodegradable films incorporated with varying concentrations of microcrystalline cellulose (MCC) which was extracted from two bamboo sources: Schizostachyum brachycladum (BLMCC) and Gigantochloa scortechinii (BSMCC). Pure biodegradable seaweed film was directly fabricated from red seaweed (Kappaphycus alvarezii). In this demonstrated w ...
DOI:
10.1007/s10924-019-01457-4

13. Modification of Poly(L-lactide) via a Pectinate Polymethylphenylsilane-co-poly(ε-caprolactone)

Author:
Ren, Yajun; Wang, Lei; Han, Libin; Xia, Wenlong; Guo, Huiling; Song, Xiaofeng
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1557-1563
ISSN:
1566-2543
Subject:
brittleness; chloroform; composite polymers; crystals; hydrolysis; mixing; polylactic acid; polymerization; tensile strength
Abstract:
... To solve the problem of the hard and brittle mechanical properties of poly(L-lactide) (PLLA), a novel pectinate polymethylphenylsilane-co-poly(ε-caprolactone) (PCL-PMPS-PCL) has been designed to modify PLLA via the hydrolysis polycondensnsation of methylphenyldimethoxysilane and ring-opening polymerization of ε-caprolactone. The triblock copolymer is characterized with ¹HNMR and GPC. It is harmoni ...
DOI:
10.1007/s10924-019-01452-9

14. Nano Graphene-Reinforced Bio-nanocomposites Based on NR/PLA: The Morphological, Thermal and Rheological Perspective

Author:
Esmizadeh, Elnaz; Sadeghi, Taha; Vahidifar, Ali; Naderi, Ghasem; Ghoreishy, Mir Hamid Reza; Paran, Seyed Mohammad Reza
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1529-1541
ISSN:
1566-2543
Subject:
adhesion; crystallization; graphene; lactic acid; melting; mixing; nanocomposites; nanosheets; rubber; storage modulus; temperature; thermal stability; thermogravimetry; thermoplastics; viscosity
Abstract:
... Bio-based graphene-reinforced thermoplastic elastomers (TPE) based on natural rubber (NR), and poly lactic acid (PLA) were successfully prepared via melt blending. The effect of graphene nanosheets (GNS) content and coupling agent were investigated on morphological, thermal and rheological properties of the PLA/NR/GNS bio-nanocomposites. More stable morphology of uniformly dispersed NR phase in th ...
DOI:
10.1007/s10924-019-01450-x

15. Polymer Based Palladium Nanocatalyst for the Degradation of Nitrate and Congo Red

Author:
Bhat, Irshad Ul Haq; Anwar, Mohamad Nur Khairul; Appaturi, Jimmy Nelson
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1475-1487
ISSN:
1566-2543
Subject:
Raman spectroscopy; X-ray diffraction; catalysts; catalytic activity; energy-dispersive X-ray analysis; hydrogen; moieties; nanomaterials; nitrates; palladium; particle size; polymers; scanning electron microscopy; spectral analysis; thermal stability; thermogravimetry; transmission electron microscopy
Abstract:
... In this study, the Pd catalyst based on chitosan-tannin (CT) framework as support was prepared and characterized. The CT support and Pd catalyst were characterized by attenuated total reflection (ATR) spectroscopy and Raman spectroscopy, Scanning electron microscopy-energy dispersive X-ray analyzer (SEM–EDX) and transmission electron microscopy (TEM) and X-ray diffractometry (XRD). Attenuated tota ...
DOI:
10.1007/s10924-019-01444-9

16. Rheology, Mechanical Properties and Morphology of Poly(lactic acid)/Ethylene Vinyl Acetate Blends

Author:
Agrawal, Pankaj; Araújo, Aylanna P. M.; Lima, Jéssica C. C.; Cavalcanti, Shirley N.; Freitas, Daniel M. G.; Farias, Giselly M. G.; Ueki, Marcelo M.; Mélo, Tomás J. A.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1439-1448
ISSN:
1566-2543
Subject:
cold; crystal structure; crystallization; differential scanning calorimetry; ethylene-vinyl acetate; impact strength; loss modulus; polylactic acid; rheology; scanning electron microscopy; storage modulus; temperature; vinyl acetate
Abstract:
... In this work, the effect of ethylene vinyl acetate (EVA) content on the rheology, mechanical properties, and morphology of poly (lactic acid) (PLA)/EVA blends was investigated. Differential Scanning Calorimetry (DSC) showed that the addition of EVA to PLA decreased the degree of crystallinity of PLA. Dynamic Mechanical Thermal Analysis (DMTA) results showed that the presence of EVA copolymer incre ...
DOI:
10.1007/s10924-019-01445-8

17. Study on Nanocellulose Properties Processed Using Different Methods and Their Aerogels

Author:
Rahbar Shamskar, Kobra; Heidari, Hannaneh; Rashidi, Alimorad
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1418-1428
ISSN:
1566-2543
Subject:
X-ray diffraction; aerogels; butanol; cellulose; crystal structure; freeze drying; grinding; homogenization; hydrogels; hydrolysis; infrared spectroscopy; mechanical methods; microstructure; nanocrystals; nitrogen; particle size; porosity; scanning electron microscopy; solvents; surface area; thermal stability; thermogravimetry; transmission electron microscopy; ultrasonic treatment; ultrasonics
Abstract:
... In this paper the effects of different mechanical methods including homogenization, ultrasonication and grinding on the properties of the nanocellulose materials and their aerogels, were investigated. The cellulose nanocrystal products, (CNC-H) and (CNC-U), were prepared by homogenization and ultrasonication of the acid hydrolyzed pulps, respectively. The aerogel products were produced by solvent ...
DOI:
10.1007/s10924-019-01438-7

18. Synthesis and Characterization of a Novel pH-Sensitive Aluminum Crosslinked Carboxymethyl Tragacanth Beads for Extended and Enteric Drug Delivery

Author:
Veeramachineni, Anand Kumar; Sathasivam, Thenapakiam; Paramasivam, Ragul; Muniyandy, Saravanan; Pushpamalar, Janarthanan
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1516-1528
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; aluminum; aluminum chloride; colon; crosslinking; diclofenac; drugs; hydrogels; models; pH; thermogravimetry
Abstract:
... Carboxymethyl tragacanth (CM-TG) with a DS of 1.2 was synthesized and characterized for drug delivery using diclofenac sodium as a model drug. The mixture of CM-TG and drug was ionically crosslinked using aluminum chloride to form drug-loaded beads. The concentrations of 10 and 20% w/w solution of CM-TG were found to produce beads with acceptable qualities. The beads exhibited pH-dependent swellin ...
DOI:
10.1007/s10924-019-01448-5

19. Titania-Containing Recycled Polypropylene Surfaces with Photo-Induced Reversible Switching Wettability

Author:
Caldona, Eugene B.; Albayalde, John Marthin C.; Aglosolos, Alyssa Marie P.; Bautista, Kimberly S.; Tavora, Monique D.; Cabalza, Stefani Ann P.; Diaz, Jeany Rose O.; Mulato, Michelle D.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1564-1571
ISSN:
1566-2543
Subject:
coatings; hydrophilicity; hydrophobicity; plastics; polypropylenes; thermal stability; titanium dioxide; ultraviolet radiation; wastes; wettability
Abstract:
... Creation of smart surfaces with reversible wettability has always fascinated researchers over the past years but complicated methods are still employed. This study reports a facile and environment-friendly fabrication of smart composite coatings from recycled polypropylene (PP) plastics in which titanium dioxide or titania particles are added to impart extreme anti-wettability with improved therma ...
DOI:
10.1007/s10924-019-01451-w

20. Treatment of Fat-Containing Wastewater Using Binary Flocculant Mixtures Based on Chitosan and Quaternary Salt of Poly(2-dimethylamino)ethyl Methacrylate

Author:
Dryabina, Svetlana S.; Fotina, Ksenia M.; Shulevich, Yulia V.; Navrotskii, Alexander V.; Novakov, Ivan A.
Source:
Journal of polymers and the environment 2019 v.27 no.7 pp. 1595-1601
ISSN:
1566-2543
Subject:
chitosan; electrolytes; flocculants; food processing; sewage; sulfates; synergism; wastewater
Abstract:
... The flocculating capability of a mixture of chitosan and poly(2-dimethylamino)ethyl methacrylate) methyl sulfate quaternary salt in fat-containing waters was studied. A synergistic effect was determined that involves a significant increase in the degree of clarification and a simultaneous decrease in the fat and organic impurity contents compared with the use of individual flocculants. The prospec ...
DOI:
10.1007/s10924-019-01454-7