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首页> 外文期刊>Polymer Composites >Structural and electrochemical properties of PEO/PAN nanofibrous blends: Prediction of graphene localization
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Structural and electrochemical properties of PEO/PAN nanofibrous blends: Prediction of graphene localization

机译：PEO / PAN纳米纤维混合物的结构和电化学性能：石墨烯定位预测

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Quasi-solid-state electrolytes were prepared by employing electrospun mats based on a blend of poly (ethylene oxide) [PEO]/poly (acrylonitrile) [PAN]/graphene nanocomposites. The effects of dispersion of graphene oxide (GO) and graphene sheets (GS) on the morphology, structure, miscibility, thermal, and mechanical properties of the PEO/PAN fibrous mats were investigated. The resultant porous membranes are good absorbent of the liquid electrolyte and exhibit high ionic conductivity. Fourier transform infrared (FTIR) spectra, dynamic mechanical analysis (DMTA), and transmission electron microscopy (TEM), revealed a phase separated structure for all the samples. Furthermore, the theoretical prediction of the position of nanofillers showed that GO particles selectively located in the PEO phase, whereas GS had a tendency to place at the interface of the two phases. Results of wide-angle x-ray scattering (WAXS) and differential scanning calorimetry (DSC) experiments indicated that GS-loaded sample presents lower amount of crystallinity than PEO/PAN and PEO/PAN/GO. Apart from more amorphous nature, GS-containing mat showed more electrical conductivity which resulted in higher ionic conductivity as compared to the other samples. On the other hand, according to TEM and XRD results, uniformly distribution and exfoliation of GO nanosheets into PEO/PAN, led to a profound improvement of the mechanical properties in comparison with PEO/PAN/GS. POLYM. COMPOS., 39:3626-3635, 2018. (c) 2017 Society of Plastics Engineers
机译：通过基于聚（环氧乙烷）[PEO] /聚（丙烯腈）[PAN] /石墨烯纳米复合材料的混合物，通过采用电纺垫来制备准固态电解质。研究了石墨烯（GO）和石墨烯片（GS）对PEO / PAN纤维垫的形态，结构，混溶性，热和力学性能的影响的影响。所得多孔膜是液体电解质的良好吸收剂，并且具有高离子电导率。傅里叶变换红外（FTIR）光谱，动态机械分析（DMTA）和透射电子显微镜（TEM），显示所有样品的相位分离结构。此外，纳米填充物位置的理论预测显示，去颗粒在PEO相中选择性地，而GS具有放置在两个阶段的界面处的趋势。广角X射线散射（蜡）和差示扫描量热法（DSC）实验结果表明，GS加载的样品比PEO / PAN和PEO / PAN / GO呈较低的结晶度。除了更多的无定形性质外，含Gs的垫子显示出更多的导电性，与其他样品相比，导致离子电导率较高。另一方面，根据TEM和XRD结果，将Go NanosheSs的均匀分布和剥离到PEO / PAN中，与PEO / PAN / GS相比，对机械性能的深刻改善。聚合物。 Compos。，39：3626-3635,2018。（c）2017塑料工程师协会

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