Preparation and surface properties of fluorine-containing diblock copolymers

被引：181
|
作者：
Li, K [1 ]
Wu, PP [1 ]
Han, ZW [1 ]
机构：
[1] E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China
来源：
POLYMER | 2002年 / 43卷 / 14期
关键词：
atom transfer radical polymerization perfluoroalkyl acrylate; critical surface tension;
D O I：
10.1016/S0032-3861(02)00202-1
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Two series of semifluorinated fluorocarbon diblock copolymer poly(butyl methacrylate-co-perfluoroalkyl acrylate) have been synthesized by atom transfer radical polymerization (ATRP). The H-1 NMR, F-EA, GPC and FTIR were used to characterize copolymer structure. Contact angle measurements on the thin polymer films showed low critical surface tensions and low dispersion force contributions to the surface energy, which indicated the presence of the fluorinated block at the surface. The results showed that the water- and oil-repellency increased with the fluorine content in the diblock copolymers. After annealing at different temperatures or different times, the water- and oil-repellent properties of diblock copolymer were increased to approach maximum values. This phenomenon proves the propensity of polymer for fluorine enrichment at air-polymer surface. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：4079 / 4086
页数：8
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