抗拉伸抗凝血性聚氨酯材料的研究  

RESEARCH ON THE POLYURETHANE WITH TENSILE AND ANTITHROMBOGENIC PROPERTY

作　　者：杨晓英[1] 陈胜男[2] 芮嘉明[2] 姜萍[2] 熊汗水[2] 黄志荣[2] 侯薇[1] 栗方星[2] 

机构地区：[1]天津医科大学药学院,天津300070 [2]南开大学吸附分离功能高分子材料国家重点实验室,天津300071

出　　处：《南开大学学报（自然科学版）》2003年第2期116-120,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：本文通过减少扩链剂的用量在聚合物内部形成支链及环形结构 ,从而合成出具有较高强度的聚氨酯 ,断裂伸长率达 1 91 4 % ,抗张强度达 4 3 0 3 N/cm2 .血小板粘附实验表明 ,通过在硬段处引入适当长度的烷基侧链 ,可对硬段提供屏蔽作用 ,材料在疲劳过程中不易使微相分离结构受到破坏 。The branch chains and the cyclic structure inside the polymer was introduced by decreasing the use level of the extender, hence the polyurethane with high intensity had been synthesized. The strain at break and the Stress at break were 1914% and 4303 N/cm 2 respectively. The antithrombogenic experiment indicated that it may provide the hard segments with shielding effect by introducing the alkyl side chain with appropriate length to the hard segments. By this way, the structure of micro-phase separation is difficult to destroy during the fatigue process of the material, which makes the antithrombogenic property stable.

关 键 词：聚氨酯 抗凝血高分子 机械性能 

分 类 号：O633.4[理学—高分子化学]