醋酸纤维素类渗透功能膜的研究进展

随着膜法水处理技术的迅猛发展,对渗透功能膜制备及应用技术的要求日益提高。与常规渗透膜制备所采用的主流膜材料聚酰胺相比,醋酸纤维素(CA)及其衍生物由于兼具无可比拟的资源优势和独特的耐氧化性等优势而备受关注。围绕醋酸纤维素类渗透膜在纳滤、反渗透和正渗透等领域的应用,简要介绍了该类膜材料的制备方法和改性方法,回顾了其在海水淡化、油水分离、重金属脱除、手性分离等领域的应用进展,并在分析醋酸纤维素类渗透膜产品在应用领域的技术和性能优势的基础上,指出了醋酸纤维素类渗透膜进一步发展需要重点关注的研究方向。

Advances in Functional Osmosis Membranes Based on Cellulose Acetate and Their Derivatives

With the development of seawater desalination technology,the requirements of the preparation and application technology of functional osmosis membranes have dramatically increased.Compared with polyamide which is the most common conventional membrane material used in osmosis membranes,cellulose acetate and its derivatives have the advantages of natural renewable and unique oxidation resistance and so on.In this review,the preparation and modification of cellulose acetate membranes which are used in nanofiltration,reverse osmosis and forward osmosis have been introduced.And the progresses in their applications in the fields of seawater desalination,oil water separa-tion,heavy metal ions removal and chiral separation have been summarized.Based on the analysis of merits and draw-backs,the research direction for the development of osmosis membrane is pointed out.