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Effect of diisopropyl thiophosphoryl‐ N ‐oxydiethylene sulfenamide and some disulfidic compounds in the covulcanization of NR–EPDM blends
Author(s) -
Ghosh Arup Kumar,
Basu Dipak Kumar
Publication year - 2003
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1228
Subject(s) - sulfenamide , disulfide bond , polymer chemistry , sulfur , ultimate tensile strength , materials science , chemistry , vulcanization , organic chemistry , composite material , natural rubber , biochemistry
Synergistic combinations of diisopropyl thiophosphoryl‐ N ‐oxydiethylene sulfenamide (DIPTOS) with some disulfide accelerators or sulfur donors improve the physical properties of NR–EPDM blend vulcanizates. Various combinations of DIPTOS with dibenzothiazyl disulfide (MBTS), tetramethyl thiuram disulfide (TMTD), bis( N ‐oxydiethylene) disulfide (ODDS) and bis(diisopropyl) thiophosphoryl disulfide (DIPDIS) were used in this study. DIPTOS when used alone produces NR vulcanizates with a moderate range of physical properties, whereas in conjunction with MBTS and DIPDIS it exhibits significant mutual activities. Morphological studies of the tensile‐fractured surfaces of the blend vulcanizates by scanning electron microscopy corroborate the physical data. Copyright © 2003 Society of Chemical Industry