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Properties of segmented block copolyurethane II. Adhesion between PET cord and rubber by poly(styrene‐b‐butadiene) polyethylene terephthalate block copolyurethane
Author(s) -
Yamashiro Seiichi,
Kuratsuji Takatoshi
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760281008
Subject(s) - copolymer , materials science , natural rubber , styrene , polyethylene terephthalate , polymer chemistry , adhesive , styrene butadiene , composite material , polymer , layer (electronics)
Hydroxy‐terminated copoly(fstyrene‐b‐1,2‐butadiene) (HPSB) containing rubber‐affinitive vinyl side chains and having a molecular weight of 2000 to 4000 were prepared, and block copolyurethanes were synthesized by using a low molecular weight hydroxy‐terminated poly (ethyl en e terephthalate) as a PET‐affinitive component and 4,4′‐diphenylmethane diisocyanate as a chain extender. The relationships between the molecular weight of HPSB, copolymerization ratio of styrene to butadiene and the adhesive strength of PKT/rubber in high temperature atmospheres were examined. A peak of adhesive strength was observed at styrene copolymerization ratio of 20 wt percent and a HPSB molecular weight of 3000. The adhesion mechanism was estimated from the behavior of the characteristic infrared absorption of block Copolyurethane in heating.