Premium
Development of acrylonitrile‐butadiene (NBR)/polyamide thermoplastic elastomeric compositions: Effect of carboxylation in the NBR phase
Author(s) -
Chowdhury R.,
Banerji M. S.,
Shivakumar K.
Publication year - 2006
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.22876
Subject(s) - carboxylation , vulcanization , compatibilization , materials science , polyamide , thermoplastic elastomer , natural rubber , elastomer , copolymer , thermoplastic , composite material , nitrile rubber , acrylonitrile , polymer chemistry , polymer blend , polymer , chemistry , organic chemistry , catalysis
The current investigation was aimed at assessing the effect of carboxylation of NBR phase in dynamically vulcanized NBR/low‐melting polyamide thermoplastic elastomeric compositions. Improved strength and set properties were achieved because of better compatibilization with carboxylated NBRs. The dispersion of the rubber became homogeneous and finer with increase in the degree of carboxylation. Glass transition studies by DMA and DSC suggested the presence of a compatibilizing block copolymer generated in situ by the reaction between the COOH groups in the rubber and the NH 2 groups in the polyamide during melt‐mixing. The reaction was studied for a representative 60 : 40 rubber/plastic blend by DSC. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 1008–1012, 2006