对苯二酚/KHCO_3体系引发碳酸丙烯酯开环聚合反应的研究  

Research on Propylene Carbonate Ring Opening Polymerization Reaction Initiated by Hydroquinone/KHCO_3 System

作　　者：张正云[1] 李乃旭[1] 王云[1] 周建成[1] 

机构地区：[1]东南大学化学化工学院,南京211189

出　　处：《精细石油化工进展》2010年第12期39-42,共4页Advances in Fine Petrochemicals

摘　　要：在对苯二酚／KHCO3体系中进行碳酸丙烯酯开环聚合反应中，得到一种聚醚碳酸酯二元醇。通过正交试验优化反应条件，采用IR，^1H NMR对产物结构进行表征，并测定了产品的相对分子质量及羟值。结果表明，在反应温度170℃，反应时间14h，KHCO3用量（以碳酸丙烯酯及对苯二酚的总的物质的量计）为2％，碳酸丙烯酯与对苯二酚物质的量比为19：1的条件下产品收率最高达78．6％。产品的重均相对分子质量为957．96，数均相对分子质量为478．98，多分散系数为2，羟值为212．2mg（KOH）／g。A polyether and carbonic ester diol was prepared by subjecting propylene carbonate to ring opening polymerization reaction in the presence of hydroquinone/KHCO3 initiating system. The reaction conditions were optimized via orthogonal tests, the structure of product was characterized by ^1H NMR, and the relative molecular mass and hydroxyl value of the product was determined. The results have shown that the product yield can be as high as 78.6% when the reaction temperature is 170 ℃, the reaction time is 14 h, the percent of KHCO3 consumption relative to the total mass of propylene carbonate and hydroquinone is 2% , and the mass ratio of propylene carbonate to hydroquinone is 19 ： 1. The weight - average molecular weight of the product is 957.96, the number - average molecular weight is 478.98, the polydispersity index is 2, and the hydroxyl value is 212.2 mg （KOH）/g.

关 键 词：对苯二酚 KHCO3 碳酸丙烯酯 开环聚合 聚醚碳酸酯二元醇 

分 类 号：TQ225.52[化学工程—有机化工]