A non-phosgene process for bioderived polycarbonate with high molecular weight and advanced property profile synthesized using amino acid ionic liquids as catalysts
作者:Zhencai Zhang、Fei Xu、Yaqin Zhang、Chenhao Li、Hongyan He、Zifeng Yang、Zengxi Li
DOI:10.1039/d0gc00265h
日期:——
bioderived polymers with high molecular weights and excellent performance and their corresponding green synthesis processes, which limits the potential of bioderived polymers to replace petroleum-based polymers. In this study, an eco-friendly synthetic process for bioderived polycarbonate, catalyzed by amino acid ionic liquids, was developed by utilizing isosorbide (ISO) and diphenyl carbonate (DPC) as
生物质和二氧化碳向塑料的转化是减少温室效应并减轻石油资源消耗的关键解决方案之一。但是,仍然缺乏具有高分子量和优异性能的生物衍生聚合物及其相应的绿色合成方法,这限制了生物衍生聚合物替代石油基聚合物的潜力。在这项研究中,通过利用异山梨醇(ISO)和碳酸二苯酯(DPC)作为反应物(分别来自可再生资源和二氧化碳),开发了一种由氨基酸离子液体催化的生物衍生聚碳酸酯的环保合成方法。通过使用1-乙基-3-甲基咪唑赖氨酸([Emim] [Lys])作为催化剂,重均分子量为150000的聚碳酸异山梨酯(PIC),Ť g ^PIC的最高温度为174°C。使用核磁共振(NMR)光谱,基质辅助激光解吸/电离飞行时间质谱(MALDI-ToF MS)和密度泛函理论(DFT)计算研究了反应机理。优异的催化性能归因于[Emim] [Lys]可以有效活化ISO的羟基和DPC的羰基,并抑制环状中间体的形成。此外,为了克服PIC的脆性,将1