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Carboxylated nitrile rubber as a reactive compatibilizer for immiscible blends of poly(vinyl chloride) and epoxidized natural rubber
Author(s) -
Ramesh P.,
De S. K.
Publication year - 1993
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.1993.070500808
Subject(s) - materials science , natural rubber , vinyl chloride , nitrile rubber , polymer blend , polyvinyl chloride , nitrile , elastomer , polymer chemistry , composite material , miscibility , polymer , copolymer , organic chemistry , chemistry
Blends of poly(vinyl chloride) (PVC) and epoxidized natural rubber (ENR) were prepared by melt‐blending and studied using a Monsanto rheometer, infrared spectrophotometer, and dynamic mechanical analyzer. The PVC/ENR blends were found to be self‐crosslinkable, but immiscible at 25/75, 50/50, and 75/25 blend ratios. However, addition of a third reactive polymer, such as carboxylated nitrile rubber (XNBR), can make the ternary blend miscible. The quantity of XNBR required to make the binary blend miscible depends on the blend ratio of the binary PVC/ENR blend and increases as the binary blend ratio changes through 25:75 to 50:50 to 75:25. © 1993 John Wiley & Sons, Inc.