综述了壳聚糖的结构及成膜材料的组成与膜性质的关系，简要讨论了壳聚糖的脱乙酰化度、交联度与相对分子量的大小等内在结构因素，以及成膜时的pH、增塑剂的类型和浓度、其它高分子材料与膜的存放时间等外界成膜条件对壳聚糖膜的通透性、柔顺性、抗拉强度等性质的影响。介绍了天然壳聚糖资源及壳聚糖膜在食品保鲜、医疗及膜分离等方面的应用进展，从而展示其研究开发的广阔前景。

The relationships between the molecular structure of chitosan, the material composition of membrane and the application properties of membrane were summarizing. The effects of internal factors, such as the deacetylation degree, cross-linking degree, relative molecular weight and environment conditions, such as pH, plasticizer varieties and dosage, other polysaccharides and the storage age of membrane on the properties of membrane such as penetrability, facility and resist-pull intensity were discussed in brief. The applications of chitosan membrane in food preservation, separation and medical treatment were reviewing. It revealed that there is broad prospect for the research and development of chitosan natural resource.

高等学校博士学科点专项科研基金项目（20050561014）资助.