CAJ | 학술논문

采用二维编织技术将二醋酸长丝制成中空管状编织物，以 NMMO/DMSO 混合物为溶剂，以水溶性聚合物为成孔剂，调制浓度为4％(质量分数)的纤维素铸膜液，采用共挤出纺丝技术制备了以中空管状编织物为增强体、纤维素为表面分离层的增强型纤维素中空纤维膜(RC膜)。研究结果表明，混合溶剂中DMSO 的加入降低了铸膜液黏度，提高了膜的纯水通量；随凝固浴温度提高，表面分离层中海绵状孔结构变得松散，膜的纯水通量提高，向凝固浴中加入 DMSO对膜通透性能的影响相对较小；从改善膜的通透性角度出发，添加成孔剂聚乙二醇优于聚乙烯吡咯烷酮；RC膜的力学性能在很大程度上取决于增强体；为保持增强体与表面分离层之间较好的界面结合状态，膜应在湿态下保存。
채용이유편직기술장이작산장사제성중공관상편직물，이 NMMO/DMSO 혼합물위용제，이수용성취합물위성공제，조제농도위4％(질량분수)적섬유소주막액，채용공제출방사기술제비료이중공관상편직물위증강체、섬유소위표면분리층적증강형섬유소중공섬유막(RC막)。연구결과표명，혼합용제중DMSO 적가입강저료주막액점도，제고료막적순수통량；수응고욕온도제고，표면분리층중해면상공결구변득송산，막적순수통량제고，향응고욕중가입 DMSO대막통투성능적영향상대교소；종개선막적통투성각도출발，첨가성공제취을이순우우취을희필각완동；RC막적역학성능재흔대정도상취결우증강체；위보지증강체여표면분리층지간교호적계면결합상태，막응재습태하보존。
Reinforced cellulose hollow fiber membranes (RC membranes)which contained hollow tubular braids reinforcement and cellulose separation surface were prepared by the co-extrusion spinning technique.The hollow tubular braids were prepared by the two-dimensional braided technique using diacetate filaments.The separation surface was obtained from 4wt% cellulose dope with NMMO/DMSO mixture as the solvent and water-soluble polymer as the pore-forming agent.The results showed that the viscosity of the dope was decreased with the ad-dition of DMSO and the membrane pure water flux increased.With the increase of the coagulant temperature, the sponge-like pore structure in the separation surface became more loose and the membrane pure water flux increased,and the addition of DMSO into coagulation bath had a lesser impact on the membrane permeability. From the view of improving the membrane permeability,the addition of polyethylene glycol was superior to polyvinyl pyrrolidone.The mechanical property of RC membranes depended largely on the reinforcement.In or-der to keep well interfacial bonding state between the reinforcement and the separation surface,the membranes should be saved in wet condition.