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| Synthesis and Characterization of Polystyrene/Nanosilica Organic-Inorganic Hybrid | |
| 作者姓名： | YUAN Wang-zhang PENG Mao YU Qiu-ming TANG BEN-zhong ZHENG Qiang |
| 作者单位： | YUAN Wang-zhang~ 1，2，PENG Mao~ 1，YU Qiu-ming~ 1，TANG BEN-zhong~ 1，3 and ZHENG Qiang~ 1，2** 1. Department of Polymer Science and Engineering，Zhejiang University，Hangzhou 310027，P. R. China; 2. National Engineering Research Center for Compounding and Modification of Polymer Materials，Guiyang 550025，P. R. China; 3. Department of Chemistry，Hong Kong University of Science and Technology，Kowloon，Hong Kong，P. R. China |
| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，教育部高等学校博士学科点专项科研基金 |
| 摘 要： | IntroductionIn the past two decades, because of its potentialindustrial applications, organic-inorganic compositeshave attracted the attention of both researchers andacademicians. Organic-inorganic hybrids offer the pos-sibility to combine both the advant… |
| 关 键 词： | 合成 表征 聚苯乙烯 纳米硅 有机-无机混合物 小硅胶 核壳橡胶 |
| 文章编号： | 1005-9040（2006）-06-797-06 |
| 收稿时间： | 2005-12-07 |
Synthesis and Characterization of Polystyrene/Nanosilica Organic-Inorganic Hybrid |
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| YUAN Wang-zhang PENG Mao YU Qiu-ming TANG BEN-zhong ZHENG Qiang.Synthesis and Characterization of Polystyrene/Nanosilica Organic-Inorganic Hybrid[J].Chemical Research in Chinese University,2006,22(6):797-802. | |
| Authors: | Wang-zhang YUAN Mao PENG Qiu-ming YU BEN-zhong TANG Qiang ZHENG |
| Institution: | aDepartment of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China bNational Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550025, P. R. China cDepartment of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong, P. R. China |
| Abstract: | A polystyrene(PS)/nanosilica organic-inorganic hybrid material was prepared from styrene monomer and commercial aqueous silica sol containing large amounts of Si-OH by means of emulsion polymerization. The nanosilica sol was modified by the addition of the reactive coupling agent methacryloxy propyltrimethoxysilane(MPS), and the resulting latex particles were protected by surfactants such as sodium dodecyl sulphonate(SDS), hydroxypropyl methyl cellulose(HMPC), and poly(vinylpyrrolidone)(PVP). The effects of the type of surfactant, the amount of surfactant, and the coupling agent on the shape and stability of the resulting latex particles were investigated. The TEM observation indicates that among SDS, HMPC, and PVP, SDS is the best surfactant. When the content of SDS is 0.5% and the amount of MPS is 7% in the system, the latex with obvious core-shell structure could be obtained. The average diameters of the monodispersed particles range from 182 to278 nm, and the average number of silica beads for each composite are 1325 and 4409, respectively. The FTIR analysis shows that PS was chemically linked to silica through MPS. The thermal gravimetric analysis shows that when there is a higher silica content, the hybrid composites have a better heat resistance. |
| Keywords: | Commercial aqueous silica sol Organic-inorganic hybrid particle Core-shell latex |
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