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Synthesis and surface characterization of novel perfluorooctyl‐functionalized polymers with well‐defined architectures
Author(s) -
Sugiyama Kenji,
Nemoto Taichi,
Koide Gen,
Hirao Akira
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200205)181:1<135::aid-masy135>3.0.co;2-z
Subject(s) - copolymer , polymer , styrene , polymer chemistry , contact angle , dodecane , x ray photoelectron spectroscopy , polymerization , characterization (materials science) , materials science , surface modification , chemical engineering , fluorine , chemistry , organic chemistry , nanotechnology , composite material , engineering
We have successfully synthesized two kinds of novel well‐defined chain‐end‐functionalized polystyrenes with one, two, three, and four perfluorooctyl (C 8 F 17 ) groups and structurally analogous block copolymers, poly[styrene‐ b ‐4‐(3‐perfluoroocyl)propoxystyrene], by means of living anionic polymerization, followed by the Williamson reaction with C 8 F 17 (CH 2 ) 3 Br. The surface properties and compositions of the films prepared from both C 8 F 17 ‐functionalized polymers have been characterized by contact angles using water and dodecane droplets and angle‐dependent XPS measurement. It was observed that C 8 F 17 groups were segregated and preferentially enriched at their topmost surfaces and the extent of the enrichment increased with the number of C 8 F 17 group. The dependence of extent of C 8 F 17 group enrichment on fluorine content however appears to be different between chain‐end‐functionalized polymer and block copolymer.