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Polymer blend

About: Polymer blend is a research topic. Over the lifetime, 18474 publications have been published within this topic receiving 437183 citations. The topic is also known as: polymer mixture & Polymerblend 或者 Polyblend.


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Journal ArticleDOI
TL;DR: In this paper, the authors have demonstrated, for the first time, a polymer blend comprising poly(vinylidene fluoride) (PVDF) and a room-temperature ionic liquid (RTIL) that shows a high CO 2 permeability of 1778-Barrer with CO 2/H 2 and CO 2 /N 2 selectivity of 12.9 and 41.1, respectively.

127 citations

Journal ArticleDOI
P. M. Subramanian1
TL;DR: In this article, a unique polymer blend approach to impart solvent and gas barrier properties to a polyolefin material is presented, which involves incorporation of small amounts of a modified nylon barrier material, and processing under controlled conditions, in single step blowmolding or other extrusion processes.
Abstract: Melt fabricated plastic articles with improved solvent and vapor barrier properties are of great need in the packaging industry. Various techniques, such as coextrusion, surface treatments, and coatings, are being employed currently towards this objective. Present work has identified a unique polymer blend approach to impart solvent and gas barrier properties to a polyolefin material. This involves incorporation of small amounts of a modified nylon barrier material, and processing under controlled conditions, in single step blowmolding or other extrusion processes. The unusual barrier effects obtained at small concentrations of the barrier material are obtained by the controlled morphology of the dispersed phase and optimum formulation of the ingredients.

127 citations

Journal ArticleDOI
Xin Chen1, Wenjun Li1, Wei Zhong1, Yuhua Lu1, Tongyin Yu1 
TL;DR: In this article, a semi-interpenetrating polymer network (semi-IPN) composed of crosslinked chitosan with glutaraldehyde and silk fibroin was prepared.
Abstract: A novel natural polymer blend, namely, a semi-interpenetrating polymer network (semi-IPN) composed of crosslinked chitosan with glutaraldehyde and silk fibroin was prepared. The FTIR spectra of the semi-IPN manifested that the chitosan and silk fibroin had a strong hydrogen-bond interaction and formed an interpolymer complex. The semi-IPN showed good pH sensitivity and ion sensitivity. According to the different swelling ratios of the semi-IPN in the buffer solution with different pH values or the AlCl3 aqueous solution with different concentrations, the semi-IPN could swell and shrink while being put alternately into different pH buffer solutions or AlCl3 aqueous with different concentrations. The semi-IPN could also act as an ''artificial muscle'' because its swelling-shrinking behavior exhibited a fine reversibility. q 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 2257-2262, 1997

127 citations

Journal ArticleDOI
TL;DR: In this article, the effect of molecular structure on the photovoltaic performance of small molecular acceptors (PSMAs) was investigated in all-polymer solar cells.
Abstract: All-polymer solar cells (all-PSCs) based on polymerized small molecular acceptors (PSMAs) have made significant progress recently. Here, we synthesize two A-DA’D-A small molecule acceptor based PSMAs of PS-Se with benzo[c][1,2,5]thiadiazole A’-core and PN-Se with benzotriazole A’-core, for the studies of the effect of molecular structure on the photovoltaic performance of the PSMAs. The two PSMAs possess broad absorption with PN-Se showing more red-shifted absorption than PS-Se and suitable electronic energy levels for the application as polymer acceptors in the all-PSCs with PBDB-T as polymer donor. Cryogenic transmission electron microscopy visualizes the aggregation behavior of the PBDB-T donor and the PSMA in their solutions. In addition, a bicontinuous-interpenetrating network in the PBDB-T:PN-Se blend film with aggregation size of 10~20 nm is clearly observed by the photoinduced force microscopy. The desirable morphology of the PBDB-T:PN-Se active layer leads its all-PSC showing higher power conversion efficiency of 16.16%. Through development of non-fullerene acceptors, OPVs have reached efficiencies of 18%, yet the inadequate operational lifetime still poses a challenge for the commercialisation. Here, the authors investigate the origin of instability of NFA solar cells, and propose some strategies to mitigate this issue.

127 citations

Journal ArticleDOI
Sunkwon Lim1, Ji W. Kim1, I. Chin1, and Y. K. Kwon1, Hyoung Jin Choi1 
TL;DR: The specific interaction between the components was quantified by the Flory−Huggins interaction parameters, B, for pairs, determined by combining the melting point depression and the binary interaction model.
Abstract: The intercalation of organically modified montmorillonite (OMMT) in the polymer blend of poly(ethylene oxide) (PEO) and poly(methyl methacrylate) (PMMA) has been demonstrated using dichloromethane as the cosolvent at room temperature. X-ray diffraction has been used to confirm the formation of nanoscale polymers-OMMT hybrids and the localization of the polymers between the organosilicate layers. The silicate nanocomposites have higher tensile modulus and elongation at break than the polymer matrix, revealing the dispersion of the clay particles in the polymer matrix. The specific interaction between the components was quantified by the Flory−Huggins interaction parameters, B, for pairs, determined by combining the melting point depression and the binary interaction model. The estimated B values for the binary PMMA/OMMT and PEO/OMMT pairs were all negative, showing both proper intercalation of the polymer into the gallery of OMMT and the homogeneous dispersion of OMMT in the polymer matrix. The B value for...

127 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202383
2022167
2021411
2020451
2019427
2018439