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首页> 外文期刊>Journal of Applied Polymer Science >In situ sol-gel process of polystyrene/silica hybrid materials: Effect of silane-coupling agents
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In situ sol-gel process of polystyrene/silica hybrid materials: Effect of silane-coupling agents

机译：聚苯乙烯/二氧化硅杂化材料的原位溶胶-凝胶工艺：硅烷偶联剂的作用

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摘要

The polystyrene-silica hybrid materials have been successfully prepared from styrene and tetraethoxysilane in the presence of silane-coupling agents by an in situ sol-gel process. Triethoxysilyl group can be incorporated into polystyrene as side chains by the free-radical copolymerization of polystyrene with silane-coupling agents, and simultaneously polystyrene-silica hybrid materials with covalent bonds between two phases were formed via the sol-gel reaction. The 3-(trimethoxysilyl)-propyl-methacrylate (MPS) systems were found to be more homogeneous than the corresponding allytrimethoxysilane hybrid system of equal molar content. In the MPS-introduced system, the thermal properties of the materials were greatly affected by the presence of MPS. FTIR results indicate successful formation of the silica networks and covalent bonding formation of coupling agents with styrene. The homogeneity of polystyrene-silica systems was examined by scanning electron microscope and atomic force microscope. (C) 2002 Wiley Periodicals, Inc. [References: 26]
机译：聚苯乙烯-二氧化硅杂化材料已经在硅烷偶联剂存在下通过原位溶胶-凝胶法成功地由苯乙烯和四乙氧基硅烷制备。三乙氧基甲硅烷基可通过聚苯乙烯与硅烷偶联剂的自由基共聚而作为侧链结合到聚苯乙烯中，同时通过溶胶-凝胶反应形成在两相之间具有共价键的聚苯乙烯-二氧化硅杂化材料。发现3-（三甲氧基甲硅烷基）-甲基丙烯酸丙酯（MPS）系统比相同摩尔含量的相应的烯丙基三甲氧基硅烷杂化系统更均匀。在引入MPS的系统中，MPS的存在极大地影响了材料的热性能。 FTIR结果表明二氧化硅网络的成功形成以及偶联剂与苯乙烯的共价键形成。通过扫描电子显微镜和原子力显微镜检查聚苯乙烯-二氧化硅体系的均匀性。 （C）2002 Wiley Periodicals，Inc. [参考：26]

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