Polymeric aluminum porphyrin:Controllable synthesis of ultra-low molecular weight CO_(2)-based polyols

作     者：Chunwei Zhuo Han Cao Xiaoshen Wang Shunjie Liu Xianhong Wang Chunwei Zhuo;Han Cao;Xiaoshen Wang;Shunjie Liu;Xianhong Wang

作者机构：Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of ChinaHefei 230026China 

出 版 物：《中国化学快报:英文版》 (Chinese Chemical Letters)

年 卷 期：2023年第34卷第8期

页      面：434-438页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：The authors greatly appreciated the financial support from National Natural Science Foundation of China(Nos.22101277 51988102 22271275 22201280) 

主　　题：CO_(2)-polyols Polymeric catalyst Aluminum porphyrin Ultra-low molecular weight Proton tolerance 

摘      要：Carbon dioxide-based polyols with ultra-low molecular weight(ULMW,Mn1000 g/mol)are emergent polyurethane precursors with economic and environmental ***,the lack of effective proton-tolerant catalytic systems limits the development of this *** this work,the polymeric aluminum porphyrin catalyst(PAPC)system was applied to the copolymerization of CO_(2)and propylene oxide,where sebacic acid,bisphenol A,poly(ethylene glycol),and water were used as chain transfer agents to achieve the controlled synthesis of CO_(2)-*** molecular weight of the resulting CO_(2)-polyols could be facilely regulated in the range of 400–930 g/mol at low catalyst loadings,fully demonstrating its catalytic advantages of high activity,high product selectivity,and excellent proton tolerance of ***,the catalytic efficiency of PAPC could reach up to 2.1–5.2 kg/g under organic CTA conditions,even reaching 1.9 kg/g using water as the *** cPC content could be controlled within 1.0 wt%under the optimized conditions,indicating the excellent controllability of the PAPC *** CO_(2)-polyols combines the advantages of low viscosity(∼3000 mPa s at 25°C),low glass transition temperature(∼−73°C),and high carbonate unit content(∼40%),which is important for the development of high-performance polyurethanes.