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, a supercapacitor electrode material derived from an immiscible polymer blend comprising polyacrylonitrile (PAN) and polymethyl methacrylate (PMMA) was investigated.
Abstract: Polymer blends yield carbon materials with superior performances for supercapacitor applications since blending can lead to controlled and fine pore architectures. In this study, a supercapacitor electrode material derived from an immiscible polymer blend comprising polyacrylonitrile (PAN) and polymethyl methacrylate (PMMA) was investigated. PAN was used as the carbonizing polymer while PMMA was used as the sacrificial polymer. The polymer blend solutions in DMF were electrospun to obtain freestanding nanofiber mats. The resulting mat was carbonized and activated by CO2 at 1000 °C to obtain porous carbon nanofibers (CNFs), as PAN converts to carbon and the sacrificial polymer decomposes creating pores. We demonstrated that the pore sizes can be tuned by varying the amount of PMMA loading in the blend compositions. PAN : PMMA (95 : 5), was found to be the optimum blend composition, affording the highest surface area of 2419 m2 g−1, higher degree of graphitization, higher carbon yield and lower charge transfer resistance among the blend compositions studied. Furthermore, the PAN : PMMA (95 : 5) CNFs showed the highest capacitance of 140 F g−1 and energy densities of 67 W h kg−1 at 3.5 V and 101 W h kg−1 at 4 V in an ionic electrolyte (EMITFSI) and also showed good cycling stability with 85% capacitance retention after 1000 cycles.
114 citations
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TL;DR: In this paper, the rheological behavior of polypropylene (PP)/acrylonitrile-butadiene rubber (NBR) blends has been investigated with special reference to the effect of blend ratio, compatibilization and dynamic vulcanization.
114 citations
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20 Mar 1998
TL;DR: In this article, the authors describe medical devices including a composition that includes an aliphatic polyketone and a thermoplastic polymer, as well as a thermoprocessor.
Abstract: Disclosed are medical devices including a composition that includes an aliphatic polyketone and a thermoplastic polymer.
114 citations
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TL;DR: In this article, the authors investigated how the rheological behavior of a linear polypropylene is changed by blending with different amounts of a long-chain branched polypolypropylene.
Abstract: This paper investigates how the rheological behavior of a linear polypropylene is changed by blending with different amounts of a long-chain branched polypropylene The zero shear-rate viscosities of the blends follows the logarithmic mixing rule between the two blend partners up to 50 wt % of the long-chain branched polypropylene For the blend with 75 wt % long-chain branched polypropylene a deviation from the logarithmic mixing rule was found, which can be referred to a disentanglement of the long-chain branched fraction of molecules during the blend extrusion process similar to the findings for the extruded long-chain branched polypropylene It is concluded that the linear polypropylene in the blends reduces the extrusion effect on the long-chain branched species in a way that for the blends with up to 50 wt % of the linear PP and no influence of the blend preparation process on the rheological behavior occurred As the branching structure within the blends remains unchanged it could be shown that the
114 citations
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TL;DR: In this article, composite membranes have been prepared from acidbase polymer blend and solid inorganic proton conductive boron phosphate (BPO4) using impedance spectroscopy at room temperature.
113 citations