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80.(Green Chem.)Concurrent Thiol-ene Competitive Reactions Enable Reprocessable, Degradable and Creep-resistant Dynamic-permanent Hybrid Covalent Networks
作者:Qiong Li1, 2, Songqi Ma1*, Na Lu1, 2, Jianfan Qiu1, 2, Jiale Ye1, Yanlin Liu1, Sheng Wang1, 2, Yingy
關鍵字:thermosets,CAN,thiol-ene addition reaction
論文來源:期刊
具體來源:Green Chemistry
發(fā)表時間:2020年


Catalyst-free, solvent-free thiol-ene addition reaction was developed to produce dynamic-permanent hybrid cross-linked polymer from two simple components a tetrathiol and a divinyl ether in one pot. The tetrathiol and divinyl ether proceeded two competitive Markovnikov and anti-Markovnikov addition reactions simultaneously, and separately generated S,O-thioacetal cross-links and thioether cross-links. The dynamic feature of S,O-thioacetal cross-links  imparts excellent malleability, reprocessability and degradability to the obtained network, and the permanent covalent thioether cross-links provide favorable high-temperature creep resistance. This work will broaden the thiol-ene chemistry, and provide a green method to achieve recyclable cross-linked polymers and covalent adaptable networks (CANs) or vitrimer-like materials with high-temperature creep resistance.  


論文鏈接:https://pubs.rsc.org/en/content/articlelanding/2020/gc/d0gc02823a#!divAbstract

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