Indexed by:期刊论文
Date of Publication:2014-06-05
Journal:JOURNAL OF APPLIED POLYMER SCIENCE
Included Journals:SCIE、EI、Scopus
Volume:131
Issue:11
ISSN No.:0021-8995
Key Words:functionalization of polymers; glass transition; structure-property relations; grafting; copolymers
Abstract:Polar polystyrene-isoprene-styrene (SIS) copolymers having epoxide groups and long polybutadiene (PB) branches were synthesized via the combination of in situ epoxidation, anionic polymerization and graft-onto reaction. They were characterized with H-1 NMR, GPC, FT-IR, DSC, and contact angle test. Their polarity was determined by the epoxidation degree and graft efficiency. The epoxidation degree linearly increased with the epoxidation time. The graft efficiency decreased with the branch length, but increased with the epoxidation degrees. Although their glass transition temperature (T-g) of diene blocks and flexibility properties had been negatively affected by in situ epoxidation, they could be modulated by the epoxidation degree, branch length, and branch density. Their T-g could be tailored by the branch length and branch density since they fitted the Fox equation very well, especially as the longer branches were grafted. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40303.
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Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:Dept. of Polymer Materials
Discipline:Polymer Materials. Polymer Chemistry and Physics. Chemistry and Chemical Engineering of Functional
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