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- Title
In situ polarity functionalization and properties of styrenic triblock copolymers synthesized via RAFT emulsion polymerization.
- Authors
Fu, Xiaowei; Lei, Yuan; Yuan, Ye; Yan, Peiyao; Wang, Jiliang; Zhou, Changlin; Lei, Jingxin
- Abstract
ABSTRACT The in situ polarity functionalization of the styrenic triblock copolymers was accomplished via the block introduction of polar monomer, n-butyl acrylate, with the help of reversible addition-fragmentation chain transfer (RAFT) emulsion polymerization. The polarity functionalization, microphase separation, static and dynamic mechanical properties, water resistance, transparency, and thermal stability of the synthesized polarity-functionalized triblock copolymers, polystyrene- block-poly( n-butyl acrylate)- block-polystyrene (SAS), were extensively studied. The poly( n-butyl acrylate) (PBA) middle block higher than 10 wt % has the favorable toughening effect on polystyrene (PSt) two-end block due to the microphase separation in SAS. The glass transition of the continuous plastic phase (mainly composed of PSt block) has a much greater influence on the storage modulus than that of the dispersed rubber phase (mainly composed of PBA block). The polarity-functionalized SAS has good water resistance, high transparency, and robust thermal stability. The polarity-functionalized SAS will have such a potential application broadening as polar adhesive. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44603.
- Subjects
POLARITY (Chemistry); POLYSTYRENE; COPOLYMERIZATION; CHAIN transfer (Chemistry); THERMAL stability; PHASE separation
- Publication
Journal of Applied Polymer Science, 2017, Vol 134, Issue 11, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.44603