CAJ | 학술논문

探究不同聚合物浓度、外凝固浴温度、内凝固浴组成对干-湿相转化法所制备的聚醚砜(PES)/聚甲基丙烯酸甲酯(P MMA )共混中空纤维超滤膜的结构和性能的影响。结果显示,P MMA 的加入可以弱化PES膜的疏水性,提高膜的综合性能；总固含量增大,膜通量下降,截留率、拉伸强度增加；外凝固浴温度上升,膜通量增大,截留率、拉伸强度降低；随着芯液中N,N-二甲基乙酰胺(DMAc)含量增大,膜截面结构由对称双指状孔结构向单排指状孔结构转化,膜通量先减后增,截留率先升后降,拉伸强度呈增大趋势。
탐구불동취합물농도、외응고욕온도、내응고욕조성대간-습상전화법소제비적취미풍(PES)/취갑기병희산갑지(P MMA )공혼중공섬유초려막적결구화성능적영향。결과현시,P MMA 적가입가이약화PES막적소수성,제고막적종합성능；총고함량증대,막통량하강,절류솔、랍신강도증가；외응고욕온도상승,막통량증대,절류솔、랍신강도강저；수착심액중N,N-이갑기을선알(DMAc)함량증대,막절면결구유대칭쌍지상공결구향단배지상공결구전화,막통량선감후증,절류솔선승후강,랍신강도정증대추세。
The effect of polymer concentration,coagulation bath temperature and bore liquid concentration on the performance of PES/PMMA blend hollow-fiber membranes,which were fabricated by phase inversion process were investigated.The addition of PMMA could improve hydrophilicity and overall performance of PES mem-brane.The results demonstrated that the pure water flux decreased gradually when the polymer concentration increased from 15% to 20%.However,the rejection and tensile strength increased.With the increase of coagu-lation bath temperature from 20 to 60 ℃,the pure water flux gradually increased,whereas both the rejection and tensile strength gradually decreased.In addition,with the increase of DMAc content in bore liquid,double finger-shaped voids on the cross-section of PES/PMMA hollow fiber membranes gradually transformed to a sin-gle row of finger voids.Meanwhile,the pure water flux first decreased and then increased.On the contrary,re-j ection decreased after slightly increasing,but tensile strength increased gradually.