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Thiophosphoryl disulfides: Novel coupling agents for styrene‐butadiene rubber/carboxylated nitrile rubber blends
Author(s) -
Biswas Tapasi,
Naskar Nityananda,
Basu Dipak Kumar
Publication year - 1995
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.1995.070580604
Subject(s) - natural rubber , nitrile rubber , styrene butadiene , nitrile , materials science , disulfide bond , polymer chemistry , composite material , styrene , elastomer , filler (materials) , polymer science , chemistry , polymer , organic chemistry , copolymer , biochemistry
Thiophosphoryl disulfide was successfully used as a novel coupling agent to form a coherent blend comprising polar carboxylated nitrile rubber (XNBR) and nonpolar styrene‐butadiene rubber (SBR) establishing close proximity between them through chemical bridging. The study reveals that XNBR in the presence of thiophosphoryl disulfide greatly improves the physical properties of SBR and thus acts as a reinforcing filler. It is noted that the physical properties of the vulcanizates obtained from the SBR‐XNBR blend depend upon the SBR : XNBR ratio and the mode of cure. SEM studies corroborate the observed facts. © 1995 John Wiley & Sons, Inc.