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Studies on natural rubber bound para ‐phenylenediamine antioxidants in NBR
Author(s) -
Avirah Shanti A.,
Joseph Rani
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.1995.070571211
Subject(s) - natural rubber , compounding , plasticizer , antioxidant , extraction (chemistry) , chemistry , polymer chemistry , organic chemistry , materials science , nuclear chemistry , composite material
Para ‐phenylenediamine (PD) was chemically attached to depolymerized natural rubber by a photochemical reaction. The rubber bound PD was characterized by TLC, 1 H‐NMR, IR, and TGA. The efficiency and permanence of the bound PD were compared with conventional antioxidants in NBR vulcanizates. The rubber bound PD was found to be less volatile and more resistant to water and oil extraction. The vulcanizates showed improved aging resistance in comparison to vulcanizates containing conventional antioxidants. The liquid rubber bound antioxidant reduces the amount of plasticizer required for compounding. © 1995 John Wiley & Sons, Inc.