聚氰基丙烯酸丁酯包覆玫瑰香精纳米胶囊的制备  

Preparation of polybutylcyanoacrylate encapsulated rose fragrance nanocapsule

作　　者：胡静[1] 肖作兵[1] 王明熙[1] 马双双[2] 周如隽[1] 李臻[1] 戴水平[2] 

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 [2]华东理工大学生物工程学院,上海200237

出　　处：《功能材料》2010年第A02期225-228,共4页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB226104);国家自然科学基金资助项目(20876097);上海市科委纳米专项资助项目(0952nm06100)

摘　　要：在乳液体系下采用离子聚合法制备了聚氰基丙烯酸丁酯包覆玫瑰香精纳米胶囊,采用红外光谱(FT-IR)、扫描电镜(SEM)、动态激光光散射(DLS)、热失重(TGA)和电子鼻对该纳米香精胶囊进行性能表征。结果表明,纳米香精胶囊中聚氰基丙烯酸丁酯与香精有一定氢键作用。纳米香精胶囊的粒径约50～60nm,分布均匀且为圆球状。纳米香精胶囊和聚氰基丙烯酸丁酯均有两段热失重,在第一段热失重中纳米香精胶囊的质量损失率较聚氰基丙烯酸丁酯增加了17.45%。上述结果证明香精已被引入纳米胶囊内部。在对纳米香精胶囊和普通香精热处理后发现,纳米香精胶囊的香气强度无明显变化,高于普通玫瑰香精,证明纳米香精胶囊具有良好的稳定性和缓释性。Polybutylcyanoacrylate（PBCA）encapsulated rose fragrance nanocapsule was prepared via anionic polymerization under the emulsion system successfully in this paper.The structure of polybutylcyanoacrylate encapsulated rose fragrance nanocapsule was determined by Fourier transform infrared spectrometry（FT-IR）,scanning electron microscope（SEM）,dynamic light scattering（DLS）,thermogravimetry analysis（TGA）and electronic nose.FT-IR displayed that PBCA interacted with rose flavor via the hydrogen bonds.DLS and SEM showed that the diameter of the spheric polybutylcyanoacrylate encapsulated rose fragrance nanocapsule kept 50-60nm and dispersed even.In comparison of PBCA,the average size of PBCA encapsulated rose fragrance nanocapsule was increased,but it dispersed more even.TGA indicated that both of PBCA and PBCA encapsulated rose fragrance nanocapsule had two thermal decomposition periods.The weight loss of nanocapsule during the first decomposition increased 17.45% compared to PBCA.Electronic nose confirmed that the heat operation can＇t influence the aroma strength of PBCA encapsulated rose fragrance nanocapsule.Besides,the aroma strength of nanocapsule was higher than that of the rose fragrance without encapsulation after thermal operation.

关 键 词：聚氰基丙烯酸丁酯 乳液 纳米胶囊 玫瑰香精 

分 类 号：TQ316[化学工程—高聚物工业]