Indexed by:
Abstract:
When the AlCl3/toluene system is employed as a catalyst, the vulcanized rubber obtained from the dodecanedioic acid (DA)-based vulcanization of epoxidized natural rubber (ENR) can be effectively decrosslinked at 160 degrees C over a period of 18 h. The reclaimed rubber can subsequently be revulcanized using DA, thereby demonstrating favorable recyclability and mechanical properties (tensile strength is 2.5 MPa, elongation at break is 91.6% and the rate of degradation is 100%). During the reaction process, AlCl3 coordinates with the carbonyl oxygen atoms within the cross-linking network, facilitating a nucleophilic substitution reaction between water (as the nucleophile) and ester groups. This reaction leads to the formation of hydroxyl groups, some of which undergo dehydration to form carbon-carbon double bonds. Through comprehensive characterization of the reclaimed rubber and model compounds, the plausible decrosslinking mechanism of the vulcanizate was elucidated.
Keyword:
Reprint 's Address:
Email:
Version:
Source :
CHEMISTRYSELECT
ISSN: 2365-6549
Year: 2025
Issue: 24
Volume: 10
1 . 9 0 0
JCR@2023
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0