文献类型：期刊文献

英文题名：Preparation and surface properties of fluorine-containing diblock copolymers PLMA-Block-PFAEA

作者：Fang, Bing[1,2]; Zhao, Zhengguo[1]; Li, Xinxin[1]; Wu, Pingping[1]; Han, Zhewen[1,3]

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

年份：2007

卷号：44

期号：10-12

起止页码：1235

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY

收录：;EI(收录号：20073610803955);WOS:【SCI-EXPANDED(收录号:WOS:000250737400023)】；

语种：英文

外文关键词：atom transfer radical polymerization (ATRP); diblock copolymers; fluoropolymers; lauryl methacrylate; surface properties

摘要：A series of fluorine-containing diblock copolymers based on lauryl methacrylate and 1H,1H,2H,2H-perfluoroalkyl acrylate have been prepared by atom transfer radical polymerization (ATRP). The preparation process of PLMA-Br macroinitiators was controlled within a reasonable time corresponding to the In [M-0]/[M-t] similar to time plot of the reaction. FTIR, H-1-NMR, GPC and fluorine-element analysis (FEA) were used to characterize the synthesized block copolymers. The solid surface activity of these polymers was demonstrated by contact angle measurement. The polymer films prepared by block copolymers with more than three fluorinated units showed low dispersion force contributions to the surface energy indicating the presence of the fluorinated block at the surface. The surface activity in solutions was measured by drop-weight method. Ii is interesting to find, when the fluorine weight percentage is controlled constant, that PLMA-b-PFAEA with larger molecular size is more prominent in exploiting the fluorinated structure to reduce the surface tension of solutions. The block copolymer's ability in reducing surface tension of solutions also depends on the type of solvent.