Synthesis of Sulfur/Selenium-containing Polyester with Recyclability and Controllable Hydrophilicity and Glass Transition Temperature

作     者：Wen-Jing Li Xiang-Qiang Pan Jian Zhu Zheng-Biao Zhang Wen-Jing Li;Xiang-Qiang Pan;Jian Zhu;Zheng-Biao Zhang

作者机构：Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationDepartment of Polymer Science and EngineeringCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2023年第41卷第12期

页      面：1836-1845,I0004,I0005页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：financially supported by National Key Research and Development Program of China(No.2022YFB3704905) the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions. 

主　　题：Ring-opening polymerization Polyester Closed-loop recycling Selective oxidation 

摘      要：We present a ring-opening polymerization of bridged cyclic lactone utilizing alcohol as the initiator and organic base as the catalyst.Bridged γ-butyrolactone monomers(PhSGBL and PhSeGBL)were synthesized efficiently from commercially available 3-cyclohexene-1-carboxylic acid.Due to the ring strain of the bridged structure,ring-opening polymerization of this type of γ-butyrolactone derivative was successfully carried out under mild conditions,e.g.,using ethylene glycol as the initiator and a commercial catalyst[1,5,7-triazabicyclo[4.4.0 dec-5-ene(TBD)]]as the catalyst at 30℃.The obtained polymer could be degraded to its monomer for recycling in the presence of ZnCl_(2) as a catalyst.PhSGBL and PhSeGBL could also be copolymerized with ε-caprolactone to tune the glass transition temperature.Additionally,the hydrophilicity of the obtained sulfur-containing polymers could be adjusted by selectively oxidizing the thioether side group to sulfone/sulfoxide,which offered a way to tune the hydrophilicity of polyester.On the other hand,the obtained selenium-containing compound could be degraded in the presence of m-CPBA(3-chloroperbenzoic acid),which offered potential application in sustained drug release.