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Study on nanometer‐size styrene‐butadiene multiblock copolymer synthesized by reactive extrusion
Author(s) -
Shishuang Gao,
Ying Zhang,
Anna Zheng,
Xiao Huining
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.13357
Subject(s) - reactive extrusion , copolymer , materials science , polymerization , styrene , polymer chemistry , styrene butadiene , plastics extrusion , polymer , extrusion , anionic addition polymerization , fourier transform infrared spectroscopy , chemical engineering , composite material , engineering
In this study, a novel styrene‐ b ‐butadiene block copolymer was synthesized by bulk anionic polymerization in a corotating closely intermeshing twin‐screw extruder. The structure of the S/B copolymer was determined by characterization methods including FTIR, NMR, dynamic mechanical analysis (DMA), and TEM. It is shown that the polymerized materials exhibit nanometer‐size styrene and butadiene (S/B) multiblock structure and ultrahigh elongation at break, which differs considerably from that of traditional solution polymerizing methods. In terms of the structure of the polymerized products, the mechanism of living anionic polymerization of S/B in a corotating intermeshing twin‐screw extruder is discussed. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 2265–2270, 2004