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Decrosslinking of zinc diacrylate‐cured epoxidized natural rubber via selective cleavage of carbon–oxygen bond
Author(s) -
Lin Tengfei,
Ke Jinhuang,
Wang Jinyun,
Lin Cong,
Wu Xiao
Publication year - 2020
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.49175
Subject(s) - natural rubber , materials science , zinc , oxygen , polymer chemistry , bond cleavage , diene , cleavage (geology) , composite material , organic chemistry , chemistry , catalysis , fracture (geology) , metallurgy
The decrosslinking for zinc diacrylate (ZDA)‐cured epoxidized natural rubber is successfully achieved by using the AlCl 3 /toluene as the decrosslinking system. The decrosslinking mechanism via selective cleavage of CO bonds of the crosslinks is revealed. Furthermore, the characterizations on the model compounds demonstrate that the cleavage of CO bonds can only occur in the ether groups, which the oxygen atoms are adjacent to the tertiary carbons. More importantly, the reclaimed rubber which possessed excellent elasticity can be recompounded and recured. The revulcanized rubber exhibits good mechanical property. This study provides a unique insight into efficient decrosslinking and recycling diene‐based rubber.