以杂萘联苯共聚醚砜(PPBES)为膜材料制备中空纤维基膜,然后通过界面聚合方法在基膜内腔制备出一种新型聚酰胺复合正渗透中空纤维膜.分别考察铸膜液组分和界面聚合工艺对复合正渗透膜结构和性能的影响.铸膜液中添加乙二醇可改变PPBES中空纤维基膜的结构和性能;PPBES基膜的结构和性能可影响聚酰胺活性层形貌和复合正渗透膜的性能;间苯二胺(MPD)质量分数会改变聚酰胺活性层的表面形貌,进而影响复合正渗透膜的性能.随着MPD质量分数从0.5％升高到2％,复合膜水通量和盐水比都呈现快速下降趋势,但MPD质量分数超过2％时,复合正渗透膜性能变化较小.随着原料液温度从25℃升高到80℃,正渗透膜水通量从20.3 L/(m2·h)快速升高到34.0 L/(m2·h),而盐水比变化较小.新型PPBES复合正渗透中空纤维膜展现出较好的耐热稳定性.
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