【摘要】 以聚氯乙烯 (PVC)、醋酸纤维素 (CA)为膜基材 ,四氢呋喃为溶剂 ,蒸馏水为沉淀剂 ,采用溶液共混法制备出PVC/CA合金纳滤膜材料作为高效液相色谱 (HPLC)柱填料。由HPLC实验给出的参考溶质的保留时间计算膜 -液界面的溶质平衡分配系数K和界面水层体积VS,探讨合金化前后聚氯乙烯膜材料界面性能及亲水性的变化 ,并测定了PVC/CA合金的极性 (αP)和非极性(αn)参数更多还原

【Abstract】 The preparation of poly(vinyl chloride)/cellulose acetate alloy nanofiltration membrane material was described.The PVC and CA were dissolved in tetrahydrofuran which was then added into a large amount of distilled water to formthe membrane material.After packing the material in the HPLC column,the retention time ofthe reference solute obtained with HPLC was used to calculate the equilibriumdistribuˉtion coefficient(K)for differentsolutes atthe membrane-liquid interface and the volume of interfacial waˉter(V s ).Similar data were also used to study the variation of the interfacial properties and hydrophilicity of poly(vinyl chloride)membrane material before and after alloying.The polar(α P )and nonpolar(α n )paˉrameters of the PVC/CA alloy were also determined.更多还原