摘要
对反渗透复合膜的表面特性及其改性方法作详细综述,以期为高性能反渗透复合膜的研制提供一定的理论指导。反渗透复合膜的表面特性(如表面粗糙度、亲水性、表面电荷等)对反渗透膜的通量、截流率和抗污染性能等具有重大影响,光滑、亲水、电中性的膜具有较好的分离性能,特别是抗污染性。表面涂层、接枝、水解等表面改性技术,可有效实现对反渗透复合膜表面性质的调控和加工,改进和优化复合膜表面的粗糙度、亲水性、荷电特性,实现对复合膜性能的调节和优化。
The surface properties and modification techniques of the thin-film composite reverse osmosis membranes were reviewed in this paper. The surface properties （such as surface roughness, hydrophilicity, and surface charge et.al.） greatly influence the permeate flux, salt rejection and fouling resistance of reverse osmosis composite membranes. Thin-film composite reverse osmosis membranes with smooth, hydrophilic and neutral surface usually exhibits good separation quality, especially the fouling resistance. Surface modification technologies including surface coating, grafting and hydrolysis are adopted availably to modulate the surface properties, improve the roughness, hydrophilicity and charge properties, and optimize the performance of reverse osmosis composite membranes.
出处
《水处理技术》
CAS
CSCD
北大核心
2009年第5期11-15,20,共6页
Technology of Water Treatment
基金
浙江省自然科学基金项目(Y4080355)
浙江理工大学科研启动基金项目(0713681)
关键词
反渗透复合膜
表面性质
粗糙度
亲水性
表面电荷
表面改性
thin-film composite RO membrane
surface property
roughness
hydrophilicity
surface charge
surface modification
