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Effect of HAF carbon black filler on chemorheological behavior of poly(acrylic acid)‐epoxidized natural rubber blend
Author(s) -
Mallick A.,
Bhattacharya A. K.,
Gupta B. R.,
Tripathy D. K.,
De S. K.
Publication year - 1997
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/(sici)1097-4628(19970705)65:1<135::aid-app17>3.0.co;2-2
Subject(s) - natural rubber , carbon black , materials science , extrusion , capillary action , composite material , acrylic acid , polymer chemistry , scanning electron microscope , swelling , polymer blend , polymer , copolymer
Brabender‐mixed blends of poly(acrylic acid) (PAA) and epoxidized natural rubber (ENR) were extruded through the capillary in a Monsanto processability tester, and the capillary pressure versus extrusion time plots were recorded. Constancy in capillary pressure with extrusion time was observed in the case of PAA/ENR blend; but the same blend, filled with HAF carbon black filler, shows a steady increase in capillary pressure with extrusion time. In presence of a free radical acceptor like thiophenol, the rate of capillary pressure rise decreases. Measurements of physical properties, swelling studies, and scanning electron microscopy photomicrography of the extrudates indicates the occurrence of a chemical interaction between physisorbed ENR and chemisorbed PAA. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 135–142, 1997