摘要
为改善精油稳定性,以偶氮苯胶束/有机硅自组装为微胶囊壁材,精油为芯材,通过O/W微乳液法制备光控释放精油微胶囊。表征微胶囊的组成和形貌,考察微乳液法在不同微胶囊制备中的适用性,研究微胶囊的热稳定性、光控释放性以及抗菌性能。结果表明:制备的微胶囊呈典型圆球状,分散良好,无黏连,平均粒径约为220.0 nm;有机硅壁材可有效保护精油,延缓精油的挥发,表现出良好的热稳定性;通过O/W微乳液法可以调控微胶囊的精油包覆量,选择精油种类;在光刺激下,精油释放呈现先快速后缓慢的释放趋势,表现出良好的光响应性;微胶囊对大肠杆菌及金黄色葡萄球菌的抗菌率可达100%,具有优异的抗菌性能。该研究为精油的包覆方法、光控释放和抗菌方面应用提供了一定的理论依据。
To improve the stability of essential oil,azobenzene micelle/silicone self-assembly was used as the microcapsule wall material and essential oil was used as the core material,and photo-controlled release essential oil microcapsules were prepared by the O/W microemulsion method.The composition and morphology of the essential oil microcapsules were characterized.The applicability of the microemulsion method in the preparation of different types of essential oil microcapsules and the release behavior and antibacterial properties of microcapsules were investigated.The results show that the prepared microcapsules are typically spherical and have good dispersion without adhesion,with an average particle size of about 220.0 nm.The silicone wall material can effectively delay the volatilization of essential oil and exhibit good thermal stability.The coating amount and the types of essential oil can be controlled by the O/W microemulsion method.Under light stimulation,the release of essential oil shows a changing trend of first rapid release and then slow release.The antibacterial rate of the developed essential oil microcapsules against Escherichia coli and Staphylococcus aureus could reach 100%,indicating excellent antibacterial properties.This study provides some reference for the coating method,photo-controlled release and anti-bacterial application of essential oil.
作者
张潇天
裘珂俊
戚栋明
孙阳艺
ZHANG Xiaotian;QIU Kejun;QI Dongming;SUN Yangyi(Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing&Finishing,Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312000,China)
出处
《浙江理工大学学报（自然科学版）》
2023年第5期566-573,共8页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省“尖兵”“领雁”攻关计划项目(2023C01200)
国家自然科学基金青年基金项目(51703203)。
关键词
O/W微乳液法
偶氮苯
精油
光控释放
抗菌性能
O/W microemulsion method
azobenzene
essential oil
photo-controlled release
antibacterial property
