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Preparation of PMMA–PS–PMMA via combination of anionic and photoinduced charge-transfer polymerization

✍ Scribed by Zaijun Lu; Decheng Wan; Junlian Huang

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
150 KB
Volume
74
Category
Article
ISSN
0021-8995

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✦ Synopsis

PMMA-PS-PMMA triblock copolymers were prepared by the combination of an anionic mechanism with charge-transfer polymerization. Polystyrene with aromatic tertiary amino groups at both ends (PS ba ) was synthesized first by the reaction of a living polystyrene macrodianion with excess p-(dimethylamino)benzaldehyde; then, the PS ba was constituted into a binary system with benzophenone (BP) to initiate the polymerization of methyl methacrylate (MMA) under UV irradiation. The intermediate and resulting block copolymers were characterized by GPC, IR, and 1 H-NMR.

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Synthesis, characterization, and hydroly
Synthesis, characterization, and hydrolysis of PVAc-PS-PVAc via charge transfer polymerization
✍ Zaijun Lu; Xiaoyu Huang; Junlian Huang 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 178 KB

An ABA triblock copolymer of polyvinyl acetate-b-polystyrene-b-polyvinyl acetate (PVAc-PS-PVAc) was successfully synthesized with a binary system composed of polystyrene with N,N-dimethylaniline end groups (PS da ) and benzophenone to initiate the polymerization of vinyl acetate under UV irradiation