Morphology Control of Highly Sulfonated Block Copolymers by a Simple Thermal Process
✍ Scribed by Kyung-Youl Baek; Hyun-Ji Kim; Sang-Ho Lee; Kie-Yong Cho; Hyeong Tae Kim; Seung Sang Hwang
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 394 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Well‐defined sulfonated block copolymers were prepared by direct thermolysis with block copolymers of n‐butyl acrylate (__n__BA) and neopentyl styrene sulfonated (NSS), which were synthesized by Cu‐based living radical polymerization ($\overline M _{\rm w} /\overline M _{\rm n}$ <1.20). A simple thermal process for 10 min at 150 °C completely deprotected the neopentyl groups in the poly(NSS) block segment to give fully sulfonated polystyrene backbone. SAXS profile of the block copolymer with 47 wt.‐% of poly(NSS) showed lamella structure, which appeared more clearly with long ranged order after sulfonation of the block copolymer.
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