A facile approach towards high-performance poly(thioether-thioester)s with full recyclability
A facile approach towards high-performance poly(thioether-thioester)s with full recyclability作者机构:National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistrySichuan UniversityChengdu 610064China
出 版 物:《Science China Chemistry》 (中国科学(化学英文版))
年 卷 期:2023年第66卷第1期
页 面:251-258页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金:supported by the National Key R&D Program of China(2021YFA1501700) the National Natural Science Foundation of China(51903177,U19A2095) the“1000-Youth Talents Program” the Fundamental Research Funds for the Central Universities(YJ201924,YJ202209)
主 题:chemically recyclable polymer plastic polythioester ring-opening polymerization mercury adsorption
摘 要:Developing new chemically recyclable polymers is important for a circular plastics ***,we prepared a class of 1,4-dithian-2-one(DTO)with thioether and thioester *** sulfur-substituted monomers(DTO)showed excellent reactivity for ring-opening polymerization(turnover frequency(TOF)up to 2.3×10^(4)h^(-1)),which afforded poly(thioetherthioester)s(P(DTO)s)with high air stability,high crystallinity,and commercial high-density polyethylene-like mechanical property(σB=29.59±1.08 MPa andεB=749%±36%).Intriguingly,chemical recycling of P(DTO)to monomer could be accomplished with excellent efficiency in dilute solution(1 min)at room temperature or even from a commodity plastic waste mixture under catalyst-free thermal bulk condition(180°C),thus establishing its circular life cycle.P(Me-DTO)could be applied for selective removal of Hg^(2+)with99%removal *** importantly,Me-DTO could be recovered in high yield after utilization for Hg^(2+)adsorption.