Abstract: Polymer separation membrane is a kind of functional polymer material used for separation and purification, which has attracted much attention in recent years. Compared with the traditional petroleum based membrane materials, poly(lactic acid) membranes have the advantages of biodegradability and good biocompatibility. As a new type of green environmental protection membrane material， it has a wide range of applications in many fields. In this paper, the research progress of PLA separation membrane at home and abroad is summarized. The methods of preparation, influencing factors of membrane structure and properties, and modification of PLA membrane are mainly elaborated. Finally, the development trend of PLA separation membranes are prospected.

Key words: Poly(lactic acid), Separation membrane, Environmental protection

摘要： 高分子分离膜是用于分离提纯的一种功能高分子材料，近年来备受人们的关注。相比于传统的石油基类膜材料，聚乳酸分离膜具有可降解、生物相容性好等优点，是一种新型绿色环保的膜材料，在诸多领域都具有广泛的应用前景。对目前国内外聚乳酸分离膜的研究进展进行了总结，重点从膜的制备方法、膜结构与性能的影响因素以及膜的改性等方面进行了阐述，最后对聚乳酸分离膜的发展趋势进行了展望。

关键词: 聚乳酸, 分离膜, 环保