摘要
观察了两种纳滤膜 (NF—SH ,MPF— 4 4)的稳定性 ,并利用原子力电镜技术 (AFM)观察膜的活性表面结构 ,发现有机溶剂导致膜结构发生显著变化。观测在溶剂中的传递通量以及溶质截留率发现 ,影响NF—SH膜的通量的主要因素是膜本身的结构 ;对MPF— 4 4膜 ,影响膜通量的主要因素是溶剂性质。
The stability of membranes in organic solvents is reported. It was found that their surface morphology are obviously changed in organic solvents using atomic force microscopy (AFM). By observing flux of solvents and rejection of solute permeating through nanofiltration membranes, the results show that flux of solvent permeating NF—SH membrane is significantly affected membrane surface morphology, and property of solvent mainly influence on flux of solvent permeating MPF—44 membrane. Rejections for the membranes (NF—SH, MPF—44) in organic systems are far lower than aqueous systems owing to interactions of solute-solvent.
出处
《科学技术与工程》
2004年第4期251-254,共4页
Science Technology and Engineering
基金
国家自然科学基金 ( 2 0 1760 0 1)资助
