Topic
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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TL;DR: In this article, the authors review computer simulation studies of the fundamental problem of homopolymers structure and dimensions in nanocomposites containing bare or grafted spherical or rod nanoparticles.
Abstract: Over the past two decades polymer nanocomposites have received tremendous interest from industry and academia due to their advanced properties comparative to polymer blends. Many computational studies have revealed that the macroscopic properties of polymer nanocomposites depend strongly on the microscopic polymer structure and conformations. In this article we review computer simulation studies of the fundamental problem of homopolymers structure and dimensions in nanocomposites containing bare or grafted spherical or rod nanoparticles. Experimentally, there is controversy over whether the addition of nanoparticles in a polymer matrix can perturb the polymer chains.
116 citations
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TL;DR: In situ composites based on blends of polypropylene (PP) and poly (ethylene terephthalate) (PET) were prepared by melt extrusion, followed by continuous drawing and isotropization.
Abstract: In situ composites based on blends of polypropylene (PP) and poly (ethylene terephthalate) (PET), were prepared by melt extrusion, followed by continuous drawing and isotropization The blending of the mixture was carried out in a single screw extruder and the isotropization of the stretched blend was achieved by injection moulding Scanning electron microscopy (SEM) studies showed that the extruded blends were isotropic, but both phases became highly oriented after drawing (stretching) The stretched blends were converted into in situ composites after injection moulding at temperatures below the melting point of PET The size of the PET fibrils generated decreased with increasing stretch ratio The tensile and impact properties were found to be higher for the samples drawn at stretch ratios 5 and 8 Dynamic mechanical properties such as the storage modulus ( E ′), loss modulus ( E ″) damping behavior (tan δ ) and static mechanical properties were investigated as a function of stretch ratio The E ′ values were found to be increasing up to a stretch ratio 8 The tan δ and E ″ modulus spectra showed a strong influence of the microfibrils on the α and β relaxation of PP Finally, the tensile properties obtained experimentally were compared with those determined using theoretical equations
116 citations
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TL;DR: In this article, the authors proposed an approach for ellipsoid retraction based on polymer blends with interfacial tension and inter-interaction tension, and showed that it is possible to retraction with polymer blends.
Abstract: Keywords: interfacial tension ; polymer blends ; ellipsoid retraction Reference LTC-ARTICLE-1997-011 URL: http://www3.interscience.wiley.com/cgi-bin/jhome/36698 Record created on 2006-06-26, modified on 2016-08-08
116 citations
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TL;DR: In this article, an inverse relationship between mechanical ductility and mobility/molecular ordering in conjugated polymer systems was determined definitively through systematic interrogation of poly(3-hexylthiophene) (P3HT) films with varied degrees of molecular ordering and associated charge transport performance.
Abstract: An inverse relationship between mechanical ductility and mobility/molecular ordering in conjugated polymer systems was determined definitively through systematic interrogation of poly(3-hexylthiophene) (P3HT) films with varied degrees of molecular ordering and associated charge transport performance. The dilemma, whereby molecular ordering required for efficient charge transport conclusively undermines the applicability of these materials for stretchable, flexible device applications, was resolved using a polymer blend approach. Specifically, the molecular interactions between dissimilar polymer materials advantageously induced semiconducting polymer ordering into efficient π–π stacked fibrillar networks. Changes in the molecular environment surrounding the conjugated polymer during the elastomer curing process further facilitated development of high mobility networked semiconductor pathways. A processed P3HT: poly(dimethylsiloxane) (PDMS) composite afforded a semiconducting film that exhibits superior du...
116 citations
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116 citations