文献类型：期刊文献

中文题名：Preparation and Characterization of Hybrid Aqueous Dispersions Composed of Silica Sol and Poly(styrene-co-acrylate)

英文题名：Preparation and characterization of hybrid aqueous dispersions composed of silica sol and poly (styrene-co-acrylate)

作者：Huang, Fuming[1]; Zhang, Guowei[1]; Hu, Chunpu[1]; Ying, Shengkang[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2005

卷号：13

期号：6

起止页码：816

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：CSTPCD;;EI(收录号：2006109747975);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000234587900017)】；CSCD:【CSCD2011_2012】；

基金：Supported by Science and Technology Commission of Shanghai Municipality (No. 0212nm008).

语种：英文

中文关键词：silica sol; copolymer; aqueous dispersion; inorganic-organic hybrid; amino-polysiloxane

外文关键词：silica sol; copolymer; aqueous dispersion; inorganic-organic hybrid; amino-polysiloxane

摘要：A stable silica sol with 3-5 nm in diameter, which can form homogeneous film without crack, was prepared and characterized. Then, the inorganic-organic hybrid aqueous dispersion composed of such a silica sol and an emulsion of styrene （St） and acrylate （Ac） copolymer was prepared and the hybrid effect between the silica sol and poly（St-co-Ac） was observed by Fourier transform infra-red （FT-IR） spectroscope. The toughness of the film prepared by this kind of hybrid aqueous dispersion was excellent, as it was enhanced appreciably by commixing with a small amount of poly（St-co-Ac） emulsion. Some amino-polysiloxane modified hybrid aqueous dispersions were also prepared and the properties of the modified dispersions and their films were investigated. The experimental results showed that the film prepared with such an amino-polysiloxane modified hybrid dispersion exhibited excellent hydrophobicity and low surface energy after heat treatment for 1.5 h, during which the formation of the graft copolymer was observed. The surface energy of this film decreases as a result of the enrichment of siloxane segments on the film surface.
A stable silica sol with 3-5 mn in diameter, which can form homogeneous film without crack, was prepared and characterized. Then, the inorganic-organic hybrid aqueous dispersion composed of such a silica sol and an emulsion of styrene (St) and acrylate (Ac) copolymer was prepared and the hybrid effect between the silica sol and poly(St-co-Ac) was observed by Fourier transform infra-red (FT-IR) spectroscope. The toughness of the film prepared by this kind of hybrid aqueous dispersion was excellent, as it was enhanced appreciably by commixing with a small amount of poly(St-co-Ac) emulsion. Some amino-polysiloxane modified hybrid aqueous dispersions were also prepared and the properties of the modified dispersions and their films were investigated. The experimental results showed that the film prepared with such an amino-polysiloxane modified hybrid dispersion exhibited excellent hydrophobicity and low surface energy after heat treatment for 1.5 h, during which the formation of the graft copolymer was observed. The surface energy of this film decreases as a result of the enrichment of siloxane segments on the film surface.