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Self crosslinkable blends of polychloroprene and phosphorylated cashew nut shell liquid prepolymer
Author(s) -
Me A. R. R.,
Visconte L. L. Y.
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.13308
Subject(s) - prepolymer , materials science , vulcanization , rheometer , fourier transform infrared spectroscopy , cardanol , swelling , composite material , neoprene , polymer chemistry , chemical engineering , natural rubber , rheology , polyurethane , engineering , epoxy
The self crosslinking behavior of polychloroprene rubber (CR) containing phosphorylated cashew nut shell liquid (PCNSL) prepolymer was studied. The cure characteristics and kinetics of crosslinking of blends of CR and PCNSL were determined using an oscillating disk rheometer. The extent of crosslinking was determined from chemical crosslink density index obtained by equilibrium swelling method in a solvent. Evidence for heat induced self crosslinking was obtained from FTIR spectroscopy. It was found that 5 to 10 phr of PCNSL accelerates the heat induced self crosslinking behavior of CR. The effect of conventional curatives and fillers on the cure characteristics and mechanical properties of CR was also studied and compared. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1619–1625, 2004