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首页> 外文期刊>Chinese science bulletin >Polypyrrole-coated styrene-butyl acrylate copolymer composite particles with tunable conductivity
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Polypyrrole-coated styrene-butyl acrylate copolymer composite particles with tunable conductivity

机译：具有可调电导率的聚吡咯涂层苯乙烯-丙烯酸丁酯共聚物复合颗粒

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摘要

A series of near or monodisperse styrene-butyl acrylate (SBA) copolymer latex particles with different butyl acrylate contents were coated with polypyrrole. The structure of the SBA/PPy composites was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), X-ray photoelectron spectros-copy (XPS), differential scanning calorimetry (DSC) and standard four-probe method. The core-shell morphology of the SBA/PPy composite particles was confirmed. The result of DSC showed that T_g of the composite is mainly determined by the core component. The effects of the concentration of polypyrrole, the butyl acrylate content in SBA copolymer and the nature of the counter-anion on the electrical conductivity of compression-moulded samples were studied. It was first found that the electrical conductivity of the samples can be tuned by varying the butyl acrylate content in SBA copolymer and the highest conductivity of the core-shell composite was 0.17S centre dot cm~(-1).
机译：用聚吡咯涂布一系列具有不同丙烯酸丁酯含量的接近或单分散的苯乙烯-丙烯酸丁酯（SBA）共聚物胶乳颗粒。 SBA / PPy复合材料的结构通过透射电子显微镜（TEM），扫描电子显微镜（SEM），漫反射红外傅里叶变换光谱（DRIFT），X射线光电子能谱（XPS），差示扫描量热法（ DSC）和标准的四探针法。证实了SBA / PPy复合颗粒的核-壳形态。 DSC的结果表明，复合材料的T_g主要由核心成分决定。研究了聚吡咯的浓度，SBA共聚物中丙烯酸丁酯的含量以及抗衡阴离子的性质对模压样品电导率的影响。首先发现，可以通过改变SBA共聚物中丙烯酸丁酯的含量来调节样品的电导率，而核-壳复合材料的最高电导率为0.17S中心点cm〜（-1）。

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