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You searched for: Subject butanol Remove constraint Subject: butanol Subject term composite polymers Remove constraint Subject term: composite polymers Subject term butanol Remove constraint Subject term: butanol
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1. Assembly of Silicalite-1 Crystals Like Toy Lego Bricks into One-, Two-, and Three-Dimensional Architectures for Enhancing Its Adsorptive Separation and Catalytic Performances

Author:
Shiying Li; Hu Shi; Sen Wang; Zhikai Li; Pengfei Wang; Xingchen Liu; Yanhong Quan; Mei Dong; Jianguo Wang; Weibin Fan
Source:
ACS applied materials & interfaces 2021 v.13 no.48 pp. 58085-58095
ISSN:
1944-8252
Subject:
1-propanol; adsorption; benzaldehyde; butanol; catalytic activity; composite polymers; cyclohexanones; energy; ethanol; gels; nanocrystallites; nanosheets; spectroscopy; zeolites
Abstract:
... Many researchers have contributed to the assembly of zeolitic nanosheets and nanocrystallites into three-dimensional (3D) networks as it can remarkably improve the catalytic and/or adsorptive performances of zeolites. However, the applications of these synthesized materials are seriously limited because of low hydrothermal stability. A highly interesting strategy, but a great challenge, is the ali ...
DOI:
10.1021/acsami.1c15226

2. Crystallization-Driven Self-Assembly of a Block Copolymer with Amphiphilic Pendant Groups

Author:
Shaofei Song; Hang Zhou; Matthew Puzhitsky; Yefeng Zhang; Garion Hicks; Yijie Lu; Ian Manners; Mitchell A. Winnik
Source:
Macromolecules 2021 v.54 no.2 pp. 930-940
ISSN:
1520-5835
Subject:
butanol; carbon; composite polymers; crystallization; decane; isopropyl alcohol; micelles; octane; polymerization; solvents; sonication; temperature; tetrahydrofuran
Abstract:
... Crystalline-coil block copolymers (BCPs) with an amphiphilic corona-forming block broaden the range of solvents in which crystallization-driven self-assembly experiments can be carried out. These materials allow one to examine how rather large changes in solvent polarity can affect the self-assembly process, leading to novel uniform structures. Here, we describe the synthesis and self-assembly pro ...
DOI:
10.1021/acs.macromol.0c02521

3. Accessibility of fiber surface sites for polymeric additives determines dry and wet tensile strength of paper sheets

Author:
J.-L. Schäfer; S. Schölch; O. Prucker; T. Brandstetter; J. Rühe; A. Ritter v. Stockert; T. Meckel; M. Biesalski
Source:
Cellulose 2021 v.28 no.9 pp. 5775-5791
ISSN:
0969-0239
Subject:
butanol; cellulose; cellulosic fibers; composite polymers; isopropyl alcohol; paper; tensile strength; wet strength
Abstract:
... This contribution focuses on understanding of paper wet-strength properties, by taking a closer look at the spatial distribution of wet-strengthening polymers inside the cellulosic fiber network deposited under different treatment conditions using confocal laser scanning microscopy as in situ imaging tool. We compare the behavior of paper samples treated with a photochemically cross-linkable copol ...
DOI:
10.1007/s10570-021-03817-7

4. Crystallization-Driven Self-Assembly of Amphiphilic Triblock Terpolymers With Two Corona-Forming Blocks of Distinct Hydrophilicities

Author:
Shaofei Song; Matthew Puzhitsky; Shuyang Ye; Mahtab Abtahi; Chandresh Kumar Rastogi; Elsa Lu; Garion Hicks; Ian Manners; Mitchell A. Winnik
Source:
Macromolecules 2020 v.53 no.15 pp. 6576-6588
ISSN:
1520-5835
Subject:
butanol; composite polymers; hydrophobicity; micelles; models; polymerization; solubility; sonication; temperature
Abstract:
... We report the synthesis and studies of self-assembly in solution of two related polyferrocenyldimethylsilane (PFS) ABC triblock terpolymers (TTPs), in which the BC blocks are amphiphilic comb diblock copolymers, PFS₂₇-b-POEGMA₁₈₀-b-PTDMA₁₇₈ and PFS₂₇-b-PTDMA₁₈₁-b-POEGMA₁₆₆. The subscripts refer to the mean degrees of polymerization. Crystallization-driven self-assembly of these TTPs was studied in ...
DOI:
10.1021/acs.macromol.0c01414

5. Formation of Colloidal Superstructures of Disc-like Particles Utilizing Hydrogen Bonding Interactions between Steric Stabilizers

Author:
Mana Fujii; Junichi Tsukiji; Takanori Nakano; Taro Omura; Toyoko Suzuki; Hideto Minami
Source:
Macromolecules 2020 v.53 no.24 pp. 11027-11032
ISSN:
1520-5835
Subject:
butanol; composite polymers; decane; hydrogen; hydrogen bonding; polyacrylic acid; polymerization; polystyrenes; polyvinylpyrrolidone; stabilizers
Abstract:
... The colloidal structure without a template was demonstrated using disc-like polystyrene (PS) particles, which had the colloidal stabilizer only on the lateral side of the discs. Disc-like PS particles stabilized by polyvinylpyrrolidone (PVP) (PSPVP) or polyacrylic acid (PAA) (PSPAA) were prepared as follows: seeded dispersion polymerization of 2-ethylhexyl methacrylate (EHMA) was conducted in the ...
DOI:
10.1021/acs.macromol.0c02015

6. Rodlike Block Copolymer Micelles of Controlled Length in Water Designed for Biomedical Applications

Author:
Qing Yu; Megan G. Roberts; Samuel Pearce; Alex M. Oliver; Hang Zhou; Christine Allen; Ian Manners; Mitchell A. Winnik
Source:
Macromolecules 2019 v.52 no.14 pp. 5231-5244
ISSN:
1520-5835
Subject:
breast neoplasms; butanol; chelating agents; chemical bonding; coatings; colloids; composite polymers; drug carriers; drugs; ethanol; heavy metals; human cell lines; isopropyl alcohol; methanol; micelles; neoplasm cells; proteins; radionuclides; sonication; toxicity
Abstract:
... There is a broad interest in elongated colloids as drug delivery vehicles, and current research aims to address how their length and aspect ratio affect interactions with cells. Block copolymer (BCP) micelles offer the opportunity to vary micelle length while maintaining cross-sectional width with corona chains that maintain a common surface chemistry across these structures. However, most elongat ...
DOI:
10.1021/acs.macromol.9b00959

7. Evaporation-induced self-assembly synthesis of nanostructured alumina-based mixed metal oxides with tailored porosity

Author:
Alexandre Amormino S. Gonçalves; Mietek Jaroniec
Source:
Journal of colloid and interface science 2019 v.537 pp. 725-735
ISSN:
0021-9797
Subject:
1-propanol; additives; aluminum; aluminum oxide; butanol; citric acid; composite polymers; ethanol; evaporation; heat treatment; hydrolysis; isopropyl alcohol; models; porosity; porous media; solvents; synthesis; texture; thermal analysis; thermal degradation; zirconium
Abstract:
... The one-pot synthesis of nanostructured ternary mixed oxides is challenging due to the heterogeneous nature of the hydrolysis and condensation processes of all metal oxide precursors. In addition, the solvents and additives used can affect these processes too. Herein, we report the effect of different solvents (ethanol, 1- and 2-propanol, or butanol) and additives (citric acid or 1,3,5-triisopropy ...
DOI:
10.1016/j.jcis.2018.11.044

8. Facile Synthesis of Copper Containing Ordered Mesoporous Polymers via Aqueous Coordination Self-Assembly for Aerobic Oxidation of Alcohols

Author:
Liyun Kong; Jiahua Zhao; Shengli Han; Tao Zhang; Langchong He; Pengfei Zhang; Sheng Dai
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.16 pp. 6438-6445
ISSN:
1520-5045
Subject:
aldehydes; benzyl alcohol; butanol; catalysts; catalytic activity; chemical reduction; composite polymers; copper; copper nanoparticles; ketones; oxidation; porous media; process design; surface area; toxicity
Abstract:
... A simple aqueous coordination self-assembly route has been demonstrated for the synthesis of copper containing ordered mesoporous polymers with mimosa tannin as the precursor and triblock copolymer Pluronic F127 (EO₁₀₆PO₇₀EO₁₀₆) as the template. The introduction of naturally occurring mimosa tannin in lieu of the toxic and costly synthetic precursors makes the aqueous coordination self-assembly st ...
DOI:
10.1021/acs.iecr.9b00669

9. Back-extraction of butanol from coacervate phase using Winsor III microemulsion

Author:
Atulkumar N. Raut; Preety S. Gedam; Pradip B. Dhamole
Source:
Process biochemistry 2018 v.70 pp. 160-167
ISSN:
1359-5113
Subject:
butanol; composite polymers; culture media; distillation; emulsions; energy; fermentation; hexane; models; nonionic surfactants; toxicity
Abstract:
... Studies with extractive fermentation using non-ionic surfactant L62 have relieved butanol toxicity and enhanced butanol production. Subsequently, L62 was used for extraction of butanol from a fermentation system using cloud point extraction (CPE). However, the back-extraction of butanol and recovery of surfactant from coacervate phase and reuse of surfactant remains a major challenge. This work pr ...
DOI:
10.1016/j.procbio.2018.04.011

10. Effect of block copolymer morphology controlled by casting-solvent quality on pervaporation of butanol/water mixtures

Author:
Chaeyoung Shin; X. Chelsea Chen; John M. Prausnitz; Nitash P. Balsara
Source:
Journal of membrane science 2017 v.523 pp. 588-595
ISSN:
0376-7388
Subject:
artificial membranes; biofuels; butanol; composite polymers; cyclohexanes; diffusivity; hexane; permeability; pervaporation; solubility; solvents; toluene
Abstract:
... Motivated by the need for developing membranes for biofuel purification, we made pervaporation membranes by casting a polystyrene-b-polydimethylsiloxane-b-polystyrene (SDS) triblock copolymer using toluene, cyclohexane, and hexane as casting solvents. The three solvents have different affinities for each of the blocks of the SDS, which enables the creation of membranes with different nano-morpholo ...
DOI:
10.1016/j.memsci.2016.09.054

11. Reaction Kinetics of CFRP Degradation in Supercritical Fluids

Author:
Huanbo Cheng; Haihong Huang; Zhifeng Liu; Jie Zhang
Source:
Journal of polymers and the environment 2018 v.26 no.5 pp. 2153-2165
ISSN:
1566-2543
Subject:
1-propanol; butanol; carbon fibers; chemical bonding; cleavage (chemistry); composite polymers; crosslinking; epoxides; equations; models; reaction kinetics; temperature; tensile strength
Abstract:
... The reaction kinetics models of carbon fiber-reinforced plastic (CFRP) degradation in supercritical fluids were established by analyzing the chain scission reaction of a cross-linked network in CFRP. The effect of reaction time and temperature on the residual resin content from the recycled carbon fiber was investigated. The reaction order of CFRP degradation was estimated, and the reaction rate c ...
DOI:
10.1007/s10924-017-1114-2

12. Reverse osmosis separation of particular organic solvent mixtures by a perfluorodioxole copolymer membrane

Author:
John Chau; Prithish Basak; Kamalesh K. Sirkar
Source:
Journal of membrane science 2018 v.563 pp. 541-551
ISSN:
0376-7388
Subject:
artificial membranes; butanol; composite polymers; dimethyl sulfoxide; dimethylformamide; ethanol; feeds; heptane; hydrophobicity; methanol; molecular weight; osmotic pressure; reverse osmosis; solvents; sorption; toluene
Abstract:
... Reverse osmosis (RO) separation of organic solvent mixtures where solvent molecular weights are < 100 Da is challenging especially for powerful solvents that swell most uncrosslinked polymers. To avoid polymer swelling by solvents, a particular perfluoropolymer, perfluoro-2,2-dimethyl-1,3-dioxole copolymerized with tetrafluoroethylene, (PDD-TFE), designated CMS-7, was studied. This amorphous glass ...
DOI:
10.1016/j.memsci.2018.05.076

13. Temperature‐dependent self‐assembly and rheological behavior of a thermoreversible pmma–PnBA–PMMA triblock copolymer gel

Author:
Mahla Zabet; Satish Mishra; Ramiz Boy; Keisha B. Walters; Amit K. Naskar; Santanu Kundu
Source:
Journal of polymer science 2017 v.55 no.11 pp. 877-887
ISSN:
0887-6266
Subject:
butanol; composite polymers; gelatinization temperature; gels; glass transition temperature; mechanical properties; melting point; polymethylmethacrylate; rheological properties; solvents; thermal analysis
Abstract:
... Self‐assembly and mechanical properties of triblock copolymers in a mid‐block selective solvent are of interest in many applications. Herein, we report physical assembly of an ABA triblock copolymer, [PMMA–PnBA–PMMA] in two different mid‐block selective solvents, n‐butanol and 2‐ethyl‐1‐hexanol. Gel formation resulting from end‐block associations and the corresponding changes in mechanical propert ...
DOI:
10.1002/polb.24336

14. Vinyl Addition Copolymers of Norbornylnorbornene and Hydroxyhexafluoroisopropylnorbornene for Efficient Recovery of n-Butanol from Dilute Aqueous Solution via Pervaporation

Author:
Beom-Goo Kang; Dong-Gyun Kim; Richard A. Register
Source:
Macromolecules 2018 v.51 no.10 pp. 3702-3710
ISSN:
1520-5835
Subject:
aqueous solutions; butanol; composite polymers; crosslinking; energy costs; energy efficiency; glass transition temperature; permeability; pervaporation; polydimethylsiloxane; thin film composite membranes
Abstract:
... The high energy cost to recover heavier alcohols, such as n-butanol, from dilute aqueous solution is a significant practical barrier to their large-scale bioproduction. Membrane pervaporation offers an energy-efficient alternative, provided membrane materials can be developed which provide both good alcohol selectivity and high flux. Previous work has revealed that vinyl addition polynorbornenes b ...
DOI:
10.1021/acs.macromol.8b00470

15. Combination of lignin and l-lactide towards grafted copolymers from lignocellulosic butanol residue

Author:
Enmin Zong; Jinhua jiang; Xiaohuan Liu; Shenyuan Fu; Yuzhi Xu; Fuxiang Chu
Source:
International journal of biological macromolecules 2016 v.86 pp. 80-88
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; absorption; butanol; catalysts; chemical structure; composite polymers; lignin; lignocellulose; molecular weight; nuclear magnetic resonance spectroscopy; polymerization; thermal properties
Abstract:
... A series of BBL-graft-poly (l-lactide) copolymers were synthesized via ring-opening polymerization (ROP) of l-lactide (l-LA) with a biobutanol lignin (BBL) initiator and a triazabicyclodecene (TBD) catalyst under free-solvent at 135°C. By manipulating the mass ratio of BBL/LLA, BBL-g-PLLA copolymers with tunable number⿿average molecular weight (Mn) (2544⿿7033gmol⿿1) were obtained. The chemical str ...
DOI:
10.1016/j.ijbiomac.2016.01.043

16. Effect of pore penetration on transport through supported membranes studied by electron microscopy and pervaporation

Author:
Chaeyoung Shin; Xi Jiang; Wonjae Ko; Nitash P. Balsara
Source:
Journal of membrane science 2017 v.542 pp. 18-23
ISSN:
0376-7388
Subject:
artificial membranes; butanol; composite polymers; models; pervaporation; polytetrafluoroethylene; porous media; transmission electron microscopy
Abstract:
... It has long been recognized that the performance of supported membranes comprising a thin, selective layer and a microporous support layer, is affected by penetration of the selective layer into the porous support. We have attempted to shed light on this phenomenon using a combination of pervaporation experiments and hard angle dark-field scanning transmission electron microscopy (HAADF-STEM). We ...
DOI:
10.1016/j.memsci.2017.07.052

17. Grafting of Technical Lignins through Regioselective Triazole Formation on β-O-4 Linkages

Author:
Panovic Isabella; Montgomery James R. D.; Lancefield Christopher S.; Puri Dhivya; Lebl Tomas; Westwood Nicholas J.
Source:
ACS sustainable chemistry 2017 v.5 no.11 pp. 10640-10648
ISSN:
2168-0485
Subject:
biorefining; butanol; composite polymers; fluorescence; fluorescent dyes; lignin; methodology; models; regioselectivity; thermal stability; triazoles; walnut hulls
Abstract:
... A new method has been developed to enable the modification of the organosolv technical lignins. Using a walnut shell butanol alkoxasolv lignin as a source of high β-O-4 content material, the β-O-4 γ-position has been selectively modified via tosylation, azidation, and copper-catalyzed azide–alkyne triazole formation. In addition, extensive model studies were used to aid the detailed characterizati ...
DOI:
10.1021/acssuschemeng.7b02575

18. Fabrication of nanofiber stationary phases from chopped polyacrylonitrile co-polymer microfibers for use in ultrathin layer chromatography of amino acids

Author:
A. Moheman; M. Sarwar Alam; A. Gupta; S. R. Dhakate; A. Kumar; A. Mohammad
Source:
RSC advances 2016 v.6 no.93 pp. 90100-90110
ISSN:
2046-2069
Subject:
butanol; composite polymers; dimethylformamide; drugs; ethyl acetate; ethylene glycol; ion exchange resins; lysine; methionine; migratory behavior; monitoring; nanofibers; polyacrylonitrile; scanning electron microscopy; silica gel; solvents; thin layer chromatography
Abstract:
... Electrospun polyacrylonitrile (PAN) copolymer nanofiber based ultrathin layer chromatographic (UTLC) plates fabricated by a facile electrospinning method have been used as the stationary phase for on-plate identification and monitoring of the migration behavior of twenty amino acids using green solvents like n-butanol, ethylene glycol, ethyl acetate and their mixtures as the mobile phase. The PAN ...
DOI:
10.1039/c6ra15465d

19. Multiblock Copolymer Grafting for Butanol Biofuel Recovery by a Sustainable Membrane Process

Author:
Vijay Kumar Shankarayya; Arnal-Herault Carole; Wang Miao; Babin Jérôme; Jonquieres Anne
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.25 pp. 16262-16272
ISSN:
1944-8252
Subject:
alkynes; aqueous solutions; biofuels; butanol; composite polymers; culture media; fermentation; microorganisms; models; permeability; pervaporation; sustainable technology; toxicity
Abstract:
... Biobutanol is an attractive renewable biofuel mainly obtained by the acetone–butanol–ethanol (ABE) fermentation process. Nevertheless, the alcohol concentration has to be limited to a maximum of 2 wt % in ABE fermentation broths to avoid butanol toxicity to the microorganisms. The pervaporation (PV) membrane process is a key sustainable technology for butanol recovery in these challenging conditio ...
DOI:
10.1021/acsami.6b01900

20. Ordered mesoporous crystalline aluminas from self-assembly of ABC triblock terpolymer–butanol–alumina sols

Author:
Kwan Wee Tan; Hiroaki Sai; Spencer W. Robbins; Jörg G. Werner; Tobias N. Hoheisel; Sarah A. Hesse; Peter A. Beaucage; Francis J. DiSalvo; Sol M. Gruner; Martin Murtagh; Ulrich Wiesner
Source:
RSC advances 2015 v.5 no.61 pp. 49287-49294
ISSN:
2046-2069
Subject:
air; aluminum; aluminum oxide; annealing; butanol; carbon; catalytic activity; ceramics; composite polymers; heat treatment; isoprene; nitrogen; porous media; solvents; synthesis; temperature; thermal stability
Abstract:
... A one-pot synthesis approach is described to generate ordered mesoporous crystalline γ-alumina–carbon composites and ordered mesoporous crystalline γ-alumina materials via the combination of soft and hard-templating chemistries using block copolymers as soft structure-directing agents. Periodically ordered alumina hybrid mesostructures were generated by self-assembly of a poly(isoprene)-block-poly ...
DOI:
10.1039/c5ra07421e

21. Selective swelling induced pore generation of amphiphilic block copolymers: The role of swelling agents

Author:
Nina Yan; Yong Wang
Source:
Journal of polymer science 2016 v.54 no.9 pp. 926-933
ISSN:
0887-6266
Subject:
1-propanol; butanol; carbon; composite polymers; glycerol; methanol; micelles; plastic deformation; pyridines; solvents
Abstract:
... Swelling of block copolymers by selective solvents has emerged as an extremely simple and efficient process to produce nanoporous materials with well‐controlled porosities. However, the role of the swelling agents in this pore‐making process remains to be elucidated. Here we investigate the evolution of morphology, thickness, and surface chemistry of thin films of polystyrene‐block‐poly (2‐vinyl p ...
DOI:
10.1002/polb.23997

22. Block copolymer pervaporation membrane for in situ product removal during acetone–butanol–ethanol fermentation

Author:
Chaeyoung Shin; Zachary C. Baer; X. Chelsea Chen; A. Evren Ozcam; Douglas S. Clark; Nitash P. Balsara
Source:
Journal of membrane science 2015 v.484 pp. 57-63
ISSN:
0376-7388
Subject:
Clostridium acetobutylicum; aqueous solutions; artificial membranes; batch fermentation; biofuels; butanol; commercialization; composite polymers; crosslinking; fermenters; pervaporation; polydimethylsiloxane
Abstract:
... We address two major challenges facing commercialization of acetone–butanol–ethanol (ABE) fermentation: product inhibition and low productivity. We studied a polystyrene-b-polydimethylsiloxane-b-polystyrene (SDS) triblock copolymer membrane for selective removal of butanol from aqueous solutions by pervaporation. The SDS membrane exhibited higher permeabilities than a commercially available cross- ...
DOI:
10.1016/j.memsci.2015.03.005

23. Butanol solubilization in aqueous F127 solution: Investigating the enhanced micellar solvation and consequent improvement in gelation characteristics

Author:
P. Parekh; J. Dey; S. Kumar; S. Nath; R. Ganguly; V.K. Aswal; P. Bahadur
Source:
Colloids and Surfaces B: Biointerfaces 2014 v.114 pp. 386-391
ISSN:
0927-7765
Subject:
butanol; colloids; composite polymers; drugs; fluorescence; gelation; gels; nonionic surfactants; porosity; porous media; solubilization; viscosity
Abstract:
... Pluronics® are an important class of non-ionic surfactants because of their rich phase behavior and numerous industrial and biomedical applications. F127, an FDA approved Pluronic® is the most prominent member amongst them owing to its potential uses as vehicle for drug delivery and template for the fabrication of mesoporous materials. A cubic micellar gel formed by this copolymer above 15wt% conc ...
DOI:
10.1016/j.colsurfb.2013.10.030

24. Impact of Nanostructure on Mechanical Properties of Norbornene-based Block Copolymers under Simulated Operating Conditions for Biobutanol Membranes

Author:
Ye Changhuai; Takigawa Tamami; Burtovvy Oleksandr (Sasha); Langsdorf Leah; Jablonski Dane; Bell Andrew; Vogt Bryan D.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.22 pp. 11765-11774
ISSN:
1944-8252
Subject:
X-radiation; annealing; atomic force microscopy; butanol; composite polymers; cracking; cylinders; mechanical stress; modulus of elasticity; modulus of rupture; nanomaterials; solubility; solvents
Abstract:
... The structure and mechanical properties of a novel block copolymer (BCP) system with Tg’s for both segments exceeding 300 °C, poly(butylnorbornene)-block-poly(hydroxyhexafluoroisopropyl norbornene) (BuNB-b-HFANB), are investigated as a function of processing conditions used for solvent vapor annealing (SVA). Solvent selection impacts long-range order markedly, but unexpectedly vertical orientation ...
DOI:
10.1021/acsami.5b02692

25. Preparation and characterization of Lignin-graft-poly (ɛ-caprolactone) copolymers based on lignocellulosic butanol residue

Author:
Xiaohuan Liu; Enmin Zong; Jinhua Jiang; Shenyuan Fu; Jifu Wang; Binbin Xu; Wenhuan Li; Xianzhi Lin; Yuzhi Xu; Chunpeng Wang; Fuxiang Chu
Source:
International journal of biological macromolecules 2015 v.81 pp. 521-529
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; absorption; atomic force microscopy; butanol; chemical composition; coatings; composite polymers; contact angle; differential scanning calorimetry; lignin; lignocellulose; molecular weight; nuclear magnetic resonance spectroscopy; polymerization; raw materials; thermal stability; thermogravimetry; toluene
Abstract:
... In this paper, a “graft from” Ring-Opening Polymerization (ROP) technique was used to synthesize a lignin-graft-poly (ɛ-caprolactone) copolymer (BBL-g-PCL) using biobutanol lignin (BBL) as raw material recovered from lignocellulosic butanol residue. Polymerizations were carried out with various mass ratios of BBL and CL monomer ([BBL]/([BBL]+[CL])=1.0%, 5.0%, 10%, 20% and 40% (w/w)) to obtain BBL- ...
DOI:
10.1016/j.ijbiomac.2015.08.046

26. Solvent Effects on Kinetics of 2-Hydroxyethyl Methacrylate Semibatch Radical Copolymerization

Author:
Liang Kun; Rooney Thomas R.; Hutchinson Robin A.
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.18 pp. 7296-7304
ISSN:
1520-5045
Subject:
butanol; composite polymers; copolymerization; engineering; gel chromatography; hydrogen bonding; molecular weight; nuclear magnetic resonance spectroscopy; solvents; styrene; temperature; xylene
Abstract:
... Radical copolymerizations of 2-hydroxyethyl methacrylate (HEMA) with n-butyl methacrylate (BMA) and n-butyl acrylate (BA) were carried out in xylene, DMF, and n-butanol solutions. Solvent effects on copolymerization propagation kinetics were investigated using pulsed laser polymerization (PLP) combined with size exclusion chromatography (SEC) as well as proton NMR, while starved-feed higher temper ...
DOI:
10.1021/ie4027549

27. The Development of Novel Nexar Block Copolymer/Ultem Composite Membranes for C2–C4 Alcohols Dehydration via Pervaporation

Author:
Zuo Jian; Shi Gui Min; Wei Shawn; Chung Tai-Shung
Source:
ACS Applied Materials & Interfaces 2014 v.6 no.16 pp. 13874-13883
ISSN:
1944-8252
Subject:
asymmetric membranes; atomic force microscopy; butanol; coatings; composite polymers; electrons; engineering; ethanol; hexane; hydrophilicity; ion exchange; isopropyl alcohol; nanomaterials; pervaporation; solvents; spectroscopy
Abstract:
... Novel composite membranes comprising sulfonated styrenic Nexar pentablock copolymers were developed by dip-coating on poly(ether imide) hollow fibers for pervaporation dehydration of C2–C4 alcohols. The advantages of using block copolymers as the selective layer are (1) their effectiveness to synergize the physicochemical properties of different chemical and structural moieties and (2) tunable nan ...
DOI:
10.1021/am503277t

28. Preparation and properties of UV-absorbent lignin graft copolymer films from lignocellulosic butanol residue

Author:
Xiaohuan Liu; Jifu Wang; Shouhai Li; Xiaowei Zhuang; Yuzhi Xu; Chunpeng Wang; Fuxiang Chu
Source:
Industrial crops and products 2014 v.52 pp. 633-641
ISSN:
0926-6690
Subject:
absorption; biological resistance; butanol; chemical structure; composite polymers; lignin; lignocellulose; mechanical properties; nuclear magnetic resonance spectroscopy; polymerization; transmittance; ultraviolet radiation
Abstract:
... The aim of this study was to develop economically UV-absorbent and visible-transparent films. For this purpose, lignin was selected because of its strong ultraviolet (UV) absorbing property. Lignocellulosic butanol residue, as the by-product of lignocellulosic butanol production, is rich in biobutanol lignin (BBL). Herein, BBL was modified with acryloyl chloride and then copolymerized with n-butyl ...
DOI:
10.1016/j.indcrop.2013.11.036

29. Rapid analysis of water- and fat-soluble vitamins by electrokinetic chromatography with polymeric micelle as pseudostationary phase

Author:
Xinjiong Ni; Xiaoping Xing; Yuhua Cao; Guangqun Cao
Source:
Journal of chromatography 2014 v.1370 pp. 263-269
ISSN:
0021-9673
Subject:
acetonitrile; butanol; chromatography; composite polymers; fat soluble vitamins; micelles; microstructure; pH; rapid methods; solvents
Abstract:
... A novel polymeric micelle, formed by random copolymer poly (stearyl methacrylate-co-methacrylic acid) (P(SMA-co-MAA)) has been used as pseudostationary phase (PSP) in electrokinetic chromatography (EKC) for simultaneous and rapid determination of 11 kinds of water- and fat-soluble vitamins in this work. The running buffer consisting of 1% (w/v) P(SMA-co-MAA), 10% (v/v) 1-butanol, 20% (v/v) acetoni ...
DOI:
10.1016/j.chroma.2014.10.047

30. Separation of diluted butanol–water solutions via vapor phase by organophilic membranes based on high permeable polyacetylenes

Author:
A.V. Yakovlev; M.G. Shalygin; S.M. Matson; V.S. Khotimskiy; V.V. Teplyakov
Source:
Journal of membrane science 2013 v.434 no. pp. 99-105
ISSN:
0376-7388
Subject:
activation energy; artificial membranes; biofuels; biomass; butanol; composite polymers; fermentation; fouling; membrane permeability; pervaporation; phase transition; polyacetylenes; temperature; vapors
Abstract:
... The diluted organic-water solutions are convenient products of biomass treatment to biofuels (e.g., ABE fermentation). A continuous membrane-assisted method by example of butanol recovery from fermentation media is considered in present work. The method is based on combination of the gas stripping (convenient process) with membrane vapor separation (with preferable butanol vapor permeability). In ...
DOI:
10.1016/j.memsci.2013.01.061

31. Synthesis, Characterization, and Epoxidation Activity of Tungsten-Incorporated SBA-16 (W-SBA-16)

Author:
Maheswari Rajamanickam; Pachamuthu Muthusamy P.; Ramanathan Anand; Subramaniam Bala
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.49 pp. 18833-18839
ISSN:
1520-5045
Subject:
X-radiation; X-ray diffraction; acidity; ammonia; butanol; catalysts; catalytic activity; composite polymers; cyclohexenes; desorption; engineering; epoxidation reactions; hydrogen; hydrogen peroxide; leaching; nitrogen; oxidants; silicon; sodium; texture; transmission electron microscopy; tungsten oxide
Abstract:
... Tungsten, in varying amounts, was incorporated into a SBA-16 structure via a one-pot direct synthesis method under an acidic medium using Pluronic F127 triblock co-polymer as a template and n-butanol as a co-surfactant. Tetraethyl orthosilicate (TEOS) and sodium tungstate were used as the Si and W sources, respectively. The resulting materials (denoted as W-SBA-16) are characterized for structural ...
DOI:
10.1021/ie501784c

32. The templating effect of an easily available cationic polymer with widely separated charge centers on the synthesis of a hierarchical ZSM-5 zeolite

Author:
Yicheng Zhang; Kake Zhu; Xuezhi Duan; Xinggui Zhou; Weikang Yuan
Source:
Journal of materials chemistry A 2014 v.2 no.43 pp. 18666-18676
ISSN:
2050-7496
Subject:
benzaldehyde; butanol; catalytic activity; composite polymers; condensation reactions; cyclohexanones; methanol; nanocrystallites; polyamines; quaternary ammonium compounds; zeolites
Abstract:
... The epichlorohydrin-N,N-dimethyl-1,3-diaminopropane copolymer (PCA) has been introduced for the first time as a meso-template to successfully synthesize a hierarchical ZSM-5 zeolite (PCA-ZSM-5) with mesopores of 7–50 nm in diameter by using small-sized nanoblocks. However, when its structural analogue epichlorohydrin–dimethylamine polyamine (PCS) is used, the obtained ZSM-5 zeolite (PCS-ZSM-5) has ...
DOI:
10.1039/c4ta02325k

33. Solvent-Dependent Switch of Helical Main-Chain Chirality in Sergeants-and-Soldiers-Type Poly(quinoxaline-2,3-diyl)s: Effect of the Position and Structures of the “Sergeant” Chiral Units on the Screw-Sense Induction

Author:
Nagata Yuuya; Yamada Tetsuya; Adachi Takumi; Akai Yuto; Yamamoto Takeshi; Suginome Michinori
Source:
Journal of the American Chemical Society 2013 v.135 no.27 pp. 10104-10113
ISSN:
1520-5126
Subject:
butanol; chloroform; composite polymers; ethylene dichloride; methylene chloride; polymerization; pyridines; solvents; stereoisomerism; toluene; trimethylamine
Abstract:
... Poly(quinoxaline-2,3-diyl) copolymers bearing various “sergeant” chiral units with common “soldier” achiral units have been synthesized to investigate the efficiency of screw-sense induction and its dependence on the nature of the solvents. Optically active 2-alkoxymethyl side chains located at the 6- and 7-positions of the quinoxaline ring induced a single-handed helical conformation more efficie ...
DOI:
10.1021/ja403391m

34. Polyion–Surfactant Ion Complex Salts Formed by a Random Anionic Copolyacid at Different Molar Ratios of Cationic Surfactant: Phase Behavior with Water and n-Alcohols

Author:
Percebom Ana Maria; Piculell Lennart; Loh Watson
Source:
Journal of physical chemistry 2012 v.116 no.8 pp. 2376-2384
ISSN:
1520-5207
Subject:
X-radiation; butanol; cationic surfactants; composite polymers; hydrophilicity; hydrophobicity; nuclear magnetic resonance spectroscopy; physical chemistry; salts; styrene; titration; viscosity
Abstract:
... The presence of acid groups with different pKₐ values in the anionic copolymer poly(4-styrene sulfonic acid-co-maleic acid), P(SS-Ma), allowed the preparation of complex salts with a variable fraction of anionic groups neutralized by cationic surfactant in the copolymer via controlled titration with hexadecyltrimethylammonium hydroxide, C₁₆TAOH. Two new complex salts were selected for detailed pha ...
DOI:
10.1021/jp2103403

35. Shear and dilational interfacial rheology of surfactant-stabilized droplets

Author:
Kendra A. Erk; Jeffrey D. Martin; Jonathan T. Schwalbe; Frederick R. Phelan Jr.; Steven D. Hudson
Source:
Journal of colloid and interface science 2012 v.377 no.1 pp. 442-449
ISSN:
0021-9797
Subject:
butanol; composite polymers; droplets; emulsions; image analysis; microscopy; oils; rheological properties; rheology; surfactants
Abstract:
... A new measurement method is suggested that is capable of probing the shear and dilational interfacial rheological responses of small droplets, those of size comparable to real emulsion applications. Freely suspended aqueous droplets containing surfactant and non-surface-active tracer particles are transported through a rectangular microchannel by the plane Poiseuille flow of the continuous oil pha ...
DOI:
10.1016/j.jcis.2012.03.078

36. The effect of n-, s- and t-butanol on the micellization and gelation of Pluronic P123 in aqueous solution

Author:
Nágila M.P.S. Ricardo; Nadja M.P.S. Ricardo; Flávia de M.L.L. Costa; Chiraphon Chaibundit; Giuseppe Portale; Daniel Hermida-Merino; Stefano Burattini; Ian W. Hamley; Christopher A. Muryn; S. Keith Nixon; Stephen G. Yeates
Source:
Journal of colloid and interface science 2011 v.353 no.2 pp. 482-489
ISSN:
0021-9797
Subject:
X-radiation; butanol; chemical concentration; composite polymers; crystal structure; gelation; gels; heat; light scattering; micelles; modulus of elasticity; porosity; rheology; solutions; temperature; turbidity; water
Abstract:
... In dilute aqueous solution unimers of copolymer P123 (E₂₁P₆₇E₂₁) associate to form micelles, and in more concentrated solution micelles pack to form high-modulus gels. We are interested in the use of the system as a templating agent in the synthesis of mesoporous materials, and the possibility of determining gel structure, hence mesoporosity, by use of n-, s- or t-butanol. Dynamic light scattering ...
DOI:
10.1016/j.jcis.2010.09.061
PubMed:
20971473

37. Transformation of highly ordered large pore silica mesophases (Fm3m, Im3m and p6mm) in a ternary triblock copolymer–butanol–water system

Author:
Freddy Kleitz; Leonid A. Solovyov; Gopinathan M. Anilkumar; Shin Hei Choi; Ryong Ryoo
Source:
Chemical communications 2004 v. no.13 pp. 1536-1537
ISSN:
1364-548X
Subject:
butanol; chemical reactions; composite polymers; silica
Abstract:
... Exceptional control of the phase behavior of highly ordered large pore mesostructured silica (with the choice of Fm3m, Im3m or p6mm symmetry) is achieved using a triblock copolymer (EO₁₀₆PO₇₀EO₁₀₆) and butanol at low acid concentrations. ...
DOI:
10.1039/b403903c