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Showing 1 to 12 of 2233 entries
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Highly mobile segments in crystalline poly(ethylene oxide)8:NaPF6 electrolytes studied by solid-state NMR spectroscopy.

The Journal of chemical physics

Luo H, Liang X, Wang L, Zheng A, Liu C, Feng J.
PMID: 24559364
J Chem Phys. 2014 Feb 21;140(7):074901. doi: 10.1063/1.4865109.

Two types of high-crystallinity poly(ethylene oxide)/NaPF6 electrolytes with ethylene oxide (EO)/Na molar ratios of 8:1 and 6:1, termed as PEO8:NaPF6 and PEO6:NaPF6 with Mw = 6000 g mol(-1) were prepared, and their ionic conductivity, structure, and segmental motions were...

Influence of water-insoluble nonionic copolymer E(6)P(39)E(6) on the microstructure and self-aggregation dynamics of aqueous SDS solution-NMR and SANS investigations.

Physical chemistry chemical physics : PCCP

Prameela GK, Phani Kumar BV, Aswal VK, Mandal AB.
PMID: 24036855
Phys Chem Chem Phys. 2013 Oct 28;15(40):17577-86. doi: 10.1039/c3cp52265b.

The influence of water-insoluble nonionic triblock copolymer PEO-PPO-PEO [poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)] i.e., E6P39E6 with molecular weight 2800, on the microstructure and self-aggregation dynamics of anionic surfactant sodium dodecylsulfate (SDS) in aqueous solution (D2O) were investigated using high resolution...

Curing kinetics and morphology of a nanovesicular epoxy/stearyl-block-poly(ethylene oxide) surfactant system.

Soft matter

Bogaerts K, Lavrenova A, Spoelstra AB, Boyard N, Goderis B.
PMID: 26144526
Soft Matter. 2015 Aug 21;11(31):6212-22. doi: 10.1039/c5sm01051a.

Brittle epoxy based thermosets can be made tougher by introducing structural inhomogeneities at the micro- or nanoscale. In that respect, nano vesicles and worm-like micelles from self-assembling blockcopolymers have been shown to be very effective. This paper describes the...

A novel pH-induced thermosensitive hydrogel composed of carboxymethyl chitosan and poloxamer cross-linked by glutaraldehyde for ophthalmic drug delivery.

Carbohydrate polymers

Yu S, Zhang X, Tan G, Tian L, Liu D, Liu Y, Yang X, Pan W.
PMID: 27702506
Carbohydr Polym. 2017 Jan 02;155:208-217. doi: 10.1016/j.carbpol.2016.08.073. Epub 2016 Aug 25.

In this work, a stimuli-responsive three dimensional cross-linked hydrogel system containing carboxymethyl chitosan (CMC) and poloxamer composed of a poly (ethylene oxide)/poly (propylene oxide)/poly (ethylene oxide) (PEO-PPO-PEO) block copolymer was constructed, and its aqueous solution was found to undergo...

Hydroxypropyl-β-CD vs. its α-homologue for a 3D modified polyrotaxane network formation and properties: the relationship between modified CD and polymer revealed through comparison.

Soft matter

Li Z, Zheng Z, Su S, Yu L, Wang X.
PMID: 27501463
Soft Matter. 2016 Sep 14;12(34):7089-101. doi: 10.1039/c6sm01368f. Epub 2016 Aug 08.

The threading mechanism of the hydroxypropyl-cyclodextrin (Hy-CD)/tetrahedron-like poly(ethylene glycol) (tetra-PEG) based host-guest complex and the relationship between Hy-CD and poly(ethylene oxide) (PEO) in the three-dimensional modified polyrotaxane (PR) formed by the complex were revealed through the comparison between Hy-β-CD/tetra-PEG...

Structure-property study of cross-linked hydrocarbon/poly(ethylene oxide) electrolytes with superior conductivity and dendrite resistance.

Chemical science

Zheng Q, Ma L, Khurana R, Archer LA, Coates GW.
PMID: 28451125
Chem Sci. 2016 Nov 01;7(11):6832-6838. doi: 10.1039/c6sc01813k. Epub 2016 Jul 19.

Lithium dendrite growth is a fundamental problem that precludes the practical use of lithium metal batteries. Solid polymer electrolytes (SPEs) have been widely studied to resist the growth of lithium dendrites but the underlying mechanisms are still unclear. Most...

Immobilization of Carbonylcobalt Catalyst by Poly(4-vinylpyridine) (P4VP) through N→Co Coordination Bonds: The Promotional Effect of Pyridine and the Reusability of Polymer Catalyst.

Chemistry, an Asian journal

Liu YB, Wang YN, Lu HM, Liang S, Xu BL, Fan YN.
PMID: 27677154
Chem Asian J. 2016 Nov 22;11(22):3159-3164. doi: 10.1002/asia.201601100. Epub 2016 Oct 21.

A carbonylcobalt catalyst, immobilized by poly(4-vinylpyridine) (P4VP) through N→Co coordination bonds, has been prepared by solvothermal method. It has been revealed that the pyridine fragments in the polymer catalyst act not only as promoters to improve the catalytic performance...

Effects of tensile strain on the peculiarities of PEO penetration into the nanoporous structure of PET deformed via the crazing mechanism.

Physical chemistry chemical physics : PCCP

Rukhlya EG, Yarysheva LM, Volynskii AL, Bakeev NF.
PMID: 26979240
Phys Chem Chem Phys. 2016 Apr 14;18(14):9396-404. doi: 10.1039/c5cp07842c. Epub 2016 Mar 16.

Solvent crazing involves the development of a highly dispersed fibrillar-porous structure with dimensions of pores and craze fibrils of about 2-20 nm, and crazing by itself can be treated as a universal method for the development of nanoscale porosity....

Controlling molecular ordering in solution-state conjugated polymers.

Nanoscale

Zhu J, Han Y, Kumar R, He Y, Hong K, Bonnesen PV, Sumpter BG, Smith SC, Smith GS, Ivanov IN, Do C.
PMID: 26242896
Nanoscale. 2015 Oct 07;7(37):15134-41. doi: 10.1039/c5nr02037a.

Rationally encoding molecular interactions that can control the assembly structure and functional expression in a solution of conjugated polymers hold great potential for enabling optimal organic optoelectronic and sensory materials. In this work, we show that thermally-controlled and surfactant-guided...

Mesoporous TiO2/Zn2Ti3O8 hybrid films synthesized by polymeric micelle assembly.

Chemical communications (Cambridge, England)

Zhao M, Bastakoti BP, Li Y, Xu H, Ye J, Liu Z, Yamauchi Y.
PMID: 26243133
Chem Commun (Camb). 2015 Oct 07;51(78):14582-5. doi: 10.1039/c5cc04903b.

A hybrid mesoporous TiO2/Zn2Ti3O8 film with a pore size of around 40 nm is successfully synthesized by the polymeric micelle assembly approach. The chemically distinct units of polymeric micelles of the poly(styrene-2-vinylpyridine-ethylene oxide) triblock copolymer simultaneously contribute to the...

Nature of the Intermicellar Interactions in Ethoxylated Polysorbate Surfactants with High Degrees of Ethoxylation.

Langmuir : the ACS journal of surfaces and colloids

Penfold J, Thomas RK, Li PX, Tucker I, Petkov J, Petkova RE.
PMID: 26785290
Langmuir. 2016 Feb 09;32(5):1319-26. doi: 10.1021/acs.langmuir.5b04642. Epub 2016 Jan 26.

Ethoxylated polysorbate Tween nonionic surfactants are extensively used as foam and emulsion stabilizers and in aqueous solution form globular micelles. The ethoxylated polysorbate surfactants with higher degrees of ethoxylation than the Tween surfactants exhibit some interesting self-assembly properties. Small-angle...

Dual soft-template system based on colloidal chemistry for the synthesis of hollow mesoporous silica nanoparticles.

Chemistry (Weinheim an der Bergstrasse, Germany)

Li Y, Bastakoti BP, Imura M, Tang J, Aldalbahi A, Torad NL, Yamauchi Y.
PMID: 25739331
Chemistry. 2015 Apr 20;21(17):6375-80. doi: 10.1002/chem.201406137. Epub 2015 Mar 04.

A new dual soft-template system comprising the asymmetric triblock copolymer poly(styrene-b-2-vinyl pyridine-b-ethylene oxide) (PS-b-P2VP-b-PEO) and the cationic surfactant cetyltrimethylammonium bromide (CTAB) is used to synthesize hollow mesoporous silica (HMS) nanoparticles with a center void of around 17 nm. The...

Showing 1 to 12 of 2233 entries