文献类型：期刊文献

英文题名：Thiol-Aldehyde Polycondensation for Bio-based Adaptable and Degradable Phenolic Polymers

作者：Jin, Yu[1] Hu, Chengcheng[1] Wang, Jie[1] Ding, Yongliang[1] Shi, Junjie[1] Wang, Zhongkai[1] Xu, Shichao[2] Yuan, Liang[1]

第一作者：Jin, Yu

通信作者：Yuan, L[1];Xu, SC[2]

机构：[1]Anhui Agr Univ, Anhui Prov Engn Ctr High Performance Biobased Nylo, Hefei 230036, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

年份：2023

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20232414215482);Scopus(收录号：2-s2.0-85161449571);WOS:【SCI-EXPANDED(收录号:WOS:001004578800001)】；

基金：Liang Yuan acknowledge the startup funding from Anhui Agricultural University and Natural Science Foundation of Anhui Province (2208085MC69).

语种：英文

外文关键词：Degradable; Polydithioacetals; Reprocessable; Sustainable Polymers; Vanillin

摘要：Designing sustainable materials with tunable mechanical properties, intrinsic degradability, and recyclability from renewable biomass through a mild process has become vital in polymer science. Traditional phenolic resins are generally considered to be not degradable or recyclable. Here we report the design and synthesis of linear and network structured phenolic polymers using facile polycondensation between natural aldehyde-bearing phenolic compounds and polymercaptans. Linear phenolic products are amorphous with T-g between -9 degrees C and 12 degrees C. Cross-linked networks from vanillin and its di-aldehyde derivative exhibited excellent mechanical strength between 6-64 MPa. The connecting dithioacetals are associatively adaptable strong bonds and susceptible to degradation in oxidative conditions to regenerate vanillin. These results highlight the potential of biobased sustainable phenolic polymers with recyclability and selective degradation, as a complement to the traditional phenol-formaldehyde resins.