以壳聚糖为基材，利用表面活性剂吐温80包覆茶树精油形成乳液，采用铸膜法制备 O/W 型茶树精油壳聚糖乳化膜，运用扫描电镜、红外光谱仪等对膜的结构特征和性能进行表征.结果表明，茶树精油被吐温80包覆，在壳聚糖溶液中形成稳定的 O/W乳液型铸膜液，成膜后茶树精油微粒呈球形，直径约为1μm.性能测试结果表明，茶树精油的添加大大提高了壳聚糖膜的抑菌效果，该膜具有较好的舒适性、吸水性、透气性和抑菌性，有望将来成为一种新型的医用材料.
Tea tree essential oil was coated with Tween 80 as surfactant to form an emulsion.Chitosan was used for the substrate and O/W chitosan-based tea tree essential oil emulsive film was prepared with cast method. Scanning electron microscopy,infrared spectroscopy,etc.were used to characterize the film’s structural feature and performance.The results showed that tea tree essential oil in chitosan solution was coated by Tween 80 to form a stable O/W emulsion casting solution.The particles of tea tree essential oil were in spherical form with a diameter of about 1μm in the film.The results of performance test indicated that the addition of tea tree es-sential oil greatly enhanced antibacterial effect of chitosan film.Film had good conformability,water absorp-tion,permeability and antibacterial property so that it was expected to be a new type of medical material in the future.
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