全封闭型茉莉香精微胶囊的制备和表征-材料研究学报.PDF

第31 卷 第1 期 Vol. 31 No. 1 2017 年1 月 CHINESE JOURNAL OF MATERIALS RESEARCH Jan. 2017 全封闭型茉莉香精微胶囊的制备和表征 宋晓秋 段玉萍 (上海应用技术学院香料香精技术与工程学院 上海 201418) 摘要采用原位聚合法以有机合成密胺树脂为壁材对茉莉香精进行包覆制备香精微胶囊，并用无机纳米二氧 化硅对微胶囊进行表面改性，制备出全封闭型茉莉香精微胶囊。用扫描电镜(SEM)、红外光谱仪、热重分析仪、 紫外分光光度计等手段对微胶囊样品的形貌、化学组分、结构、包埋率以及封闭性进行了表征。结果表明，本 文制备的全封闭型茉莉香精微胶囊具有单核壳核结构，微胶囊的囊壁具有密闭特性，香精包埋率达到18% 。 关键词 无机非金属材料，茉莉香精，纳米二氧化硅，密胺树脂，原位聚合法，全封闭微胶囊 中图分类号 TQ657, TQ323 文章编号 1005-3093(2017)01-0027-05 Preparation and Characterization of Totally Encapsulated Microcapsules of Jasmine Fragrance SONG Xiaoqiu, DUAN Yuping (School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, China) Correspondent: SONG Xiaoqiu, Tel: E-mail: songxiaoqiu@sit.edu.cn Supported by Alliance Program of Shanghai (No. LM201318) Manuscript received 2015-12-18, in revised form 2016-09-20 ABSTRACT Totally encapsulated microcapsules of jasmine fragrance were prepared by in situ polym- erization with melamine resin as wall material and inorganic nanometer silicon dioxide as surface modifi- er. The morphology, chemical composition, structure and embedding rate of the prepared microcapsules were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectro- metric test, thermo gravimetric analysis (TG-DTG). Results show that the totally encapsulated microcap- sules of jasmine fragrance present a core-shell structure with the capsule shell of good tightness and an embedding rate of 18%.