通过DSC扫描分析PVDF/TPU共混后二者相容性.采用相转化法制备PVDF/TPU中空纤维膜.牛血清白蛋白截留实验、FTIR-ATR红外光谱扫描、扫描电子显微镜分析共混时添加水溶性聚合物聚乙烯吡咯烷酮(PVP)后对中空纤维膜分离性能、微观结构、晶相组成的影响.结果表明,PVDF/TPU为部分相容体系,添加适量的PVP伊可以明显改善PVDF的亲水性和膜过滤性能.
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