分别采用溶液共混和熔融共混的方法制备出聚氨酯/碳纳米纤维复合材料,研究了碳纳米纤维对聚氨酯的热行为和表面微观化学组成的影响,并观察和测定了血小板在复合材料表面的粘附以及血液中血红蛋白浓度、纤维蛋白原浓度的变化,分析了碳纳米纤维对聚氨酯血液相容性的影响.结果表明,引入碳纳米纤维后,聚氨酯复合材料的表面氧含量有不同程度的提高,玻璃化转变温度及熔融温度都发生了改变;血小板在复合材料表面的粘附受到明显的抑制;经血泵循环4 h后,在与聚氨酯复合材料表面接触的血液中,血红蛋白和纤维蛋白原浓度的变化相对减小;复合材料的血液相容性提高.
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