Chemical transformation of polyurethane into valuable polymers  

作　　者：Bo Sun Jiawei Zou Weijie Qiu Shuheng Tian Maolin Wang Haoyi Tang Baotieliang Wang Shifang Luan Xiaoyan Tang Meng Wang Ding Ma 

机构地区：[1]Beijing National Laboratory for Molecular Science,New Cornerstone Science Laboratory,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China [2]State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [3]Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,Center for Soft Matter Science and Engineering,Beijing 100871,China

出　　处：《National Science Review》2025年第1期140-148,共9页国家科学评论(英文版)

基　　金：supported by the National Natural Science Foun-dation of China(22072002,22232001,21932002,21821004 and 52173093);the National Key R&D Program of China(2021YFA1501102);China Post-doctoral Science Foundation(2021M690004 and 2021T140005);the Open Project of State Key Laboratory of Inorganic Synthesis and Preparative Chem-istry(2025-5);China National Petroleum Corporation-Peking University Strategic Co-operation Project of Fundamental Research,and the New Cornerstone Science Foundation;D.M.acknowledges support from the Tencent Foundation through the XPLORER PRIZE.

摘　　要：Polyurethanes are an important class of synthetic polymers,widely used in a variety of applications ranging from everyday items to advanced tools in societal infrastructure.Their inherent cross-linked structure imparts exceptional durability and flexibility,yet this also complicates their degradation and recycling.Here we report a heterogeneous catalytic process that combines methanolysis and hydrogenation with a CO_(2)/H_(2) reaction medium,effectively breaking down PU waste consisting of urethane and ester bonds into valuable intermediates like aromatic diamines and lactones.These intermediates are then converted into functional polymers:polyimide(PI),noted for its exceptional thermal and electrical insulation,and polylactone(P(BL-co-CL)),a biodegradable alternative to traditional plastics.Both polymers exhibit enhanced performance compared to existing commercial products.This approach not only contributes to the valorization of plastic waste but also opens new avenues for the creation of high-performance materials.

关 键 词：polyurethanes catalytic upcycling plastic wastes HYDROGENATION 

分 类 号：O643.36[理学—物理化学]