摘要
利用ATR单点全反射技术以及XPS(X光电子能谱 )测试方法对聚苯乙烯 聚二甲基硅氧烷嵌段 (PS b PDMS)和接枝共聚物 (PS g PDMS)进行了研究 ,发现聚合物膜表面存在着有机硅富集层 ,PS b PDMS有机硅表面富集程度要高于PS g PDMS ,而且不同溶解度参数的成膜溶剂和不同极性的成膜介质对有机硅富集程度有一定的影响 .
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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第1期137-141,共5页
Acta Polymerica Sinica
基金
上海市科委重大项目 (项目号 0 2dz110 17)
