文献类型：期刊文献

英文题名：Surface study of block and graft copolymers of polystyrene-polydimethylsiloxane

作者：Wu, NJ; Huang, LK; Zheng, A; Hu, FZ; Guan, Y

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

年份：2005

期号：1

起止页码：137

外文期刊名：ACTA POLYMERICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000226944400027)】；

语种：英文

外文关键词：PS-b-PDMS; PS-g-PDMS; ATR-FTIR; XPS; surface enrichment

摘要：The surface compositions of a series of block and graft copolymers of polystyrene-polydimethylsiloxane was investigated by attenuated total reflectance (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) At was shown that enrichment of PDMS soft segments occurred on the surface of the block copolymers as well as on that of graft copolymers. The degree of enrichment of PS-b-PDMS was larger than that of PS-g-PDMS, which was explained as a result of the easiness of movement of the PDMS segments of PS-b-PDMS. Meanwhile, the solvents of different solubility parameter and the contact medium of different polarity had different influence on the enrichment of PDMS on the surface. The surface energy measurement further confirmed that the diblock copolymers tended to have higher surface enrichment of the PDMS segments than that of the graft copolymers.