热固性聚合物
环氧树脂
环氧化物
双酚A
材料科学
植物油
环氧化大豆油
复分解
有机化学
化学
聚合物
高分子化学
聚合
原材料
催化作用
作者
Chiara Di Mauro,Thi-Nguyet Tran,Alain Graillot,Alice Mija
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2020-04-22
卷期号:8 (20): 7690-7700
被引量:54
标识
DOI:10.1021/acssuschemeng.0c01419
摘要
Bisphenol A-based epoxy thermosets involve both environmental and health risks. By reacting a vegetal oil-based epoxide with an aromatic diacid containing S–S bonds a thermoset is produced. Herein, reprocessable thermosets were synthesized, the recyclability being designed through a dual mechanism: that of disulfide metathesis and of transesterifications. To assess the feasibility of the reprocessing, a series of 10 initiators was tested to probe their effect not only on the cross-linking reaction but also on the recyclability. This study introduces for the first time the key role of the initiator on the material performance and on their reprocessing. A very good reprocessability was obtained for thermosets prepared using as initiator the imidazole. Moreover, the thermosets exhibit complete chemical recyclability in 1 N NaOH at 80 °C, after 3 days, without needing additional chemicals. The reprocessed materials have similar performance with the virgin ones, even after 10 cycles of reprocessing.
科研通智能强力驱动
Strongly Powered by AbleSci AI