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Tin‐coupled star‐shaped block copolymer of styrene and butadiene (II) properties and application
Author(s) -
Feng Huadong,
Zhang Xingying,
Zhao Suhe
Publication year - 2008
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.28867
Subject(s) - styrene butadiene , copolymer , materials science , polybutadiene , natural rubber , dynamic mechanical analysis , composite material , polystyrene , elastomer , vulcanization , tin , polymer chemistry , styrene , polymer , metallurgy
A novel tin‐coupled star‐shaped block copolymer (SB‐B) 4 Sn was synthesized by anionic polymeric techniques. This new copolymer exhibited two different types: One was star‐shaped polybutadiene‐ b ‐poly(butadiene‐ ran ‐styrene) ( S ‐PB‐PSB), and the other was star‐shaped polybutadiene‐ b ‐poly(butadiene‐ ran ‐styrene)‐ b ‐polystyrene ( S ‐PB‐PSB‐PS). In this article, properties of (SB‐B) 4 Sn were contrasted with that of tin‐coupled star‐shaped random styrene‐butadiene rubber ( S ‐SBR) and S ‐SBR/ cis ‐BR blend rubbers. Physical property testing results showed that (SB‐B) 4 Sn possessed good mechanical properties like S ‐SBR. Rheological study indicated that these star‐shaped block copolymers had good processing properties. Rubber processing analyzer (RPA) spectra showed that the dispersion of additives in (SB‐B) 4 Sn and S ‐SBR/ cis ‐BR blend rubber was much better than that in S ‐SBR. Dynamic mechanical thermal analyzer (DMTA) spectra showed that (SB‐B) 4 Sn had a good combination of low rolling resistance and high wet skid resistance, which made it satisfactory materials to produce high performance tire tread. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
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