细乳液聚合法制备兔耳草醛纳米胶囊  

Encapsulation of cyclamen aldehyde via miniemulsion polymerization

作　　者：胡静[1] 肖作兵[1] 王明熙[1] 李臻[1] 耿永琪[1] 

机构地区：[1]上海应用技术学院香料香精技术与工程学院,上海200235

出　　处：《功能材料》2010年第A03期499-502,共4页Journal of Functional Materials

基　　金：国家重点基础研究发展(973计划)前期资助项目(2009CB226104);国家自然科学基金资助项目(20876097);上海市晨光人才计划资助项目(10CG60);上海应用技术学院引进人才计划资助项目(YJ2009-26)

摘　　要：采用细乳液聚合法以聚丙烯酸叔丁酯为壁材制备兔耳草醛纳米胶囊。考察了乳化剂用量、芯壁比和十六烷用量对兔耳草醛纳米胶囊粒径、粒径分布、载香量和包埋率的影响。并采用红外光谱、透射电镜和气相色谱对兔耳草醛胶囊进行性能表征。结果表明,兔耳草醛已被引入聚丙烯酸叔丁酯中;兔耳草醛纳米胶囊呈圆球型,胶囊内部浅色部分为兔耳草醛,外部为聚丙烯酸叔丁酯,粒径分布较均匀约100nm;普通加香棉织物经10次洗涤后其香气强度较未洗涤棉织物降低了30.17%。兔耳草醛纳米胶囊加香后棉织物经10次洗涤后其香气强度较未洗涤棉织物下降了8.39%。兔耳草醛纳米胶囊加香棉织物的香气缓释效果明显优于普通兔耳草醛加香棉织物。Encapsulation of cyclamen aldehyde（CA） was obtained via miniemulsion polymerization successfully in this paper. The influence of the reaction condition such as emulsifier content, the ratio of CA and poly（tert-butylacrylate） and hexadecane content on the average diameter, particle distribution index, encapsulation efficiency and fragrance content in nanocapsule of CA nanocapsule was investigated in detail. The structure of CA nanocapsule was determined by Fourier transform infrared spectrometry（FT-IR）, transmission electron microscope（TEM） and gas chromatography（GC）. FT-IR displayed that CA had been encapsulated into PtBA. TEM showed that the diameter of the spheric CA nanocapsule kept 100nm and dispersed even. The light color part was CA, the dark color part was PtBA. GC indicated that the fragrance strength released from the cotton fabric aromatized with CA after washing 10 times was decrease by 30. 17% in contrast to that without washing;the fragrance strength released from the cotton fabric aromatized with CA nanocapsule after washing 10 times was only declined by 8. 39% in contrast to that without washing. CA nanocapsule had the better fragrance sustained release property than CA.

关 键 词：细乳液聚合法 兔耳草醛 聚丙烯酸叔丁酯 纳米胶囊 

分 类 号：TQ316[化学工程—高聚物工业]