首页> 外文期刊>Journal of Applied Polymer Science >Fabrication and characterization of multilayer SiO _2/ polymethacrylic acid/polypyrrole composites and hollow polypyrrole microspheres
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Fabrication and characterization of multilayer SiO _2/ polymethacrylic acid/polypyrrole composites and hollow polypyrrole microspheres

机译:多层SiO _2 /聚甲基丙烯酸/聚吡咯复合材料和中空聚吡咯微球的制备与表征

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摘要

Methacrylic acid was polymerized on the 3-(methacryloxy)propyl trimethoxysilane-modified silica core. The carboxylic acid groups of polymethacrylic acid (PMAA) not only provide the "active-sites" for growth of the pyrrole monomers but also act as doping acids for polypyrrole (PPy). By in situ polymerization route, SiO _2/PMAA/PPy multilayer composites and hollow PPy microspheres with controllable shell thickness were fabricated. The morphologies, sizes, and structures of the nanocomposites were investigated in detail by transmission electron microscopy, scanning electron microscopy, Fourier-transform infrared spectra, X-ray photoelectron spectroscopy, and thermogravimetric analysis.
机译:甲基丙烯酸在3-(甲基丙烯酰氧基)丙基三甲氧基硅烷改性的二氧化硅核上聚合。聚甲基丙烯酸(PMAA)的羧酸基不仅为吡咯单体的生长提供“活性部位”,而且还充当了聚吡咯(PPy)的掺杂酸。通过原位聚合工艺,制备了壳厚度可控的SiO _2 / PMAA / PPy多层复合材料和中空PPy微球。通过透射电子显微镜,扫描电子显微镜,傅立叶变换红外光谱,X射线光电子能谱和热重分析详细研究了纳米复合材料的形貌,大小和结构。

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