石榴型P(MMA-co-TMPTA)/香精微胶囊的制备与缓释性能  

Preparation and sustained-releaseproperties of poly(MMA-co-TMPTA)/fragrance microcapsules

作　　者：杜梦宇 朱建政 欧阳旭 徐士翔 张朝霞[1] 张国庆[1] DU Mengyu;ZHU Jianzheng;OUYANG Xu;XU Shixiang;ZHANG Zhaoxia;ZHANG Guoqing(School of Materials Science&Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;Yantai Environmental Sanitation Management Center,Yantai 264000,China)

机构地区：[1]浙江理工大学材料科学与工程学院,杭州310018 [2]烟台市环境卫生管理中心,山东烟台264000

出　　处：《现代纺织技术》2022年第5期167-173,共7页Advanced Textile Technology

基　　金：国家自然科学基金项目(22075252)。

摘　　要：聚甲基丙烯酸甲酯(PMMA)是制备缓释芳香微胶囊的常用壁材之一,但实际生产中发现其包封率低,而且香精易挥发会造成异味和浪费。本文以甲基丙烯酸甲酯(MMA)和三羟甲基丙烷三丙烯酸酯(TMPTA)复合单体,通过原位聚合得到薰衣草/P(MMA-co-TMPTA)微胶囊。采用扫描电子显微镜(SEM)、热重分析仪(TGA)、热解气相色谱-质谱(GC-MS)和电子鼻(PEN-3)对所合成的薰衣草香精微胶囊进行了表征,并考察了芯壳比对微胶囊包封率的影响。结果显示:薰衣草/P(MMA-co-TMPTA)微胶囊表现为石榴形,颗粒尺寸约10~20μm,并且具有良好的耐热性能。优化配方工艺发现芯壳比为1.5∶1时,所得薰衣草香精微胶囊尺寸均匀、稳定性好,包封率高达94.2%。将合成的微胶囊通过浸轧热定型处理到织物上进行长期缓释实验,结果表明该微胶囊香精缓释性能优异,处理在织物上的香味可以保持3个月以上。Polymethyl methacrylate(PMMA) is one of the commonly used encapsulation materials for the preparation of sustained-release fragrancemicrocapsules. However, in practical production, the encapsulation efficiency is low and uncoated fragrance will cause bad smell and large waste. In this study, Lavender/(PMMA-co-TMPTA) fragrance microcapsules were prepared by in-situ polymerization with trimethylolpropane triacrylate(TMPTA) as comonomer. The lavender flavor microcapsules were characterized by scanning electron microscope(SEM), thermogravimetric analyzer(TGA), pyrolysis gas chromatography-mass spectrometry(PGC-MS) and electronic nose(PEN-3). The influence of core shell ratio on encapsulation efficiency of microcapsules was also investigated. The results showed that the prepared Lavender/(PMMA-co-TMPTA) microcapsules were pomegranate with rough surface and concave, and the particle size was between 10~20 μm. It was found that when the core-shell ratio was 1.5 : 1, the lavender microcapsule had uniform size and good stability, and the encapsulation efficiency was as high as 94.2%. The microcapsule was treated on the fabric for long-term release experiment. The results showed that the microencapsulated Lavender had excellent sustained release properties, and the flavor on the fabric could be maintained for more than three months.

关 键 词：聚甲基丙烯酸甲酯(PMMA) 香精微胶囊 共聚 热稳定性 缓释性能 

分 类 号：TB339[一般工业技术—材料科学与工程]