研究以壳聚糖(Cs)作为高分子金属催化剂载体,制得负载稀土金属化合物的高分子金属催化剂,应用于环氧乙烷(BO)和环氧丙烷(PO)的共聚合反应.研究发现以三异丁基铝(Al(i-Bu)3)为助催化剂,乙酰丙酮(Acac)为第三组分时,该体系的催化活性高达192 kg*copolymer/mol*Y,比非负载型稀土催化体系活性提高1个数量级以上.环氧乙烷和环氧丙烷的竞聚率r 1(EO)、r 2(PO)分别为2.75±0.02和0.55±0.01;并用13C-NMR谱和DSC谱对共聚物结构进行了表征.
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