高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (6): 974.

• 论文 • 上一篇    下一篇

聚氧乙烯功能基复合修饰聚氨酯合成及其血液相容性研究 (Ⅱ)──聚氨酯-接枝-聚氧乙烯氨基酸衍生物

计剑, 季任天, 邱永兴, 陈宝林, 封麟先   

  1. 浙江大学高分子科学与材料研究所, 杭州 310027
  • 收稿日期:1998-05-08 出版日期:1999-06-24 发布日期:1999-06-24
  • 通讯作者: 封麟先
  • 作者简介:计剑,男,28岁,博士,讲师.
  • 基金资助:

    国家自然科学基金(批准号:28904009)资助课题

Synthesis and Invitro Bloodcompatibility of Polyurethane Modified by Amino Acid

JI Jian, JI Ren-Tian, QIU Yong-Xing, CHEN Bao-Lin, FENG Lin-Xian   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027
  • Received:1998-05-08 Online:1999-06-24 Published:1999-06-24

摘要: 采用以磺酸基为末端基的聚氧乙烯(PEO)接枝聚醚氨酯和氨基酸反应,将赖氨酸(Lys)和酪氨酸(Tyr)通过PEO为"间隔臂"固定在聚醚氨酯上,制备了氨基酸和PEO复合修饰的聚醚氨酯PEU-g-PEO-SO2Lys和PEU-g-PEO-SO2Tyr.通过血小板粘附试验对材料的体外抗凝血性进行了初步评价.研究结果表明,采用具有选择性吸附纤溶酶原功能的赖氨酸和PEO复合修饰聚氨酯,不仅减少了材料表面血小板粘附量,而且减少了材料表面血栓的形成量.

关键词: 聚氨酯, 赖氨酸, 血液相容性

Abstract: Anew reactive graft copolymer, polyurethane-graft-w-propyl sodium sulfonatepoly(ethylene glycol)(PEU-g-PEO-SO3-Na+), was synthesized by PTMG-g-PEO-SO3-Na+, MDI and 1,4-butanedioL IN two steps. Two amino acids (L-lysine and L-tyrosine) were covalently attached to the copolymer after converting the sulfonate group to sulfonyl chloride. The structure of the resuting polyurethanes were characterized by IRand UV. The polyurethane modified by L-lysine and L-tyrosine can resist both platelet adhesion and thromb formation.

Key words: Polyurethane, Lysine, Blood-compatibility

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