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近年来,亲水性单体如丙烯酰胺(AAM)或甲基丙烯酸2-羟乙酯与丙烯腈分别接枝到聚氨酯或聚乙烯醇上,得到具有抗凝血的医用高分子材料,其中铈盐是在室温下异相接枝共聚合常用的一有效引发剂。Halpern报道了聚环氧丙烷(PPG)与4,4′-二苯甲烷二异氰酸酯(MDI),以脂肪胺或芳胺扩链剂合成的聚醚氨酯(PEU),可用铈盐引发AAM接枝共聚合。本文将报道我们最近研究的,关于丙烯酰胺以硝酸铈铵(CAN)引发接枝聚合到由聚四亚
In recent years, hydrophilic monomers such as acrylamide (AAM) or 2-hydroxyethyl methacrylate and acrylonitrile were grafted to polyurethane or polyvinyl alcohol, respectively, to obtain anticoagulant medical macromolecular materials, wherein cerium Salt is an effective initiator commonly used at room temperature for heterophasic graft copolymerization. Halpern reported polyether urethane (PEU) made from polypropylene oxide (PPG) and 4,4’-diphenylmethane diisocyanate (MDI) with aliphatic amines or aromatic amine chain extenders, which can be initiated with a cerium salt Copolymerization. This article will report on our recent research on the effect of acrylamide on cerium ammonium nitrate (CAN) initiated graft polymerization to poly