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Transition behavior of polychloroprene and polychloroprene/styrene‐butadiene blends
Author(s) -
Kell R. M.,
Bennett Bailey,
Stickney P. B.
Publication year - 1959
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.1959.070020402
Subject(s) - neoprene , crystallization , materials science , vulcanization , glass transition , styrene butadiene , polymer , natural rubber , composite material , polymer blend , styrene , polymer chemistry , chemical engineering , copolymer , engineering
Dilatometric studies have been carried out to determine crystallization and glass transition data for various unvulcanized and vulcanized polychloroprenes and polychloroprene/styrene‐butadiene blends. The maximum rate of crystallization of both unvulcanized polychloroprene and the blends occurred near −5°C. Melting temperatures of the polychloroprenes ranged from 36 to 43°C. The glass transition temperature of all polychloroprenes studied was near −45°C., and this was lowered to −50°C. with the addition of 30 pph of SBR‐1500. The added SBR polymer retarded the rate and ultimate degree of crystallization somewhat.