界面聚合聚脲/聚氨酯复合壳体香精微胶囊的制备及性能  

Preparation and properties of polyurea/polyurethane shell microencapsulated essence by interfacial polymerization

作　　者：王乔逸 陆少锋 师文钊[1,2] 洪勋 姚东霞[1,2] 张领 WANG Qiaoyi;LU Shaofeng;SHI Wenzhao;HONG Xun;YAO Dongxia;ZHANG Ling(School of Textile Science and Engineering,Xi’an Polytechnic University,Xi’an 710048,Shaanxi,China;Key Laboratory of Functional Textile Material and Product(Xi’an Polytechnic University),Ministry of Education,Xi’an 710048,Shaanxi,China)

机构地区：[1]西安工程大学纺织科学与工程学院,陕西西安710048 [2]西安工程大学功能性纺织材料及制品教育部重点实验室,陕西西安710048

出　　处：《化工进展》2022年第8期4432-4440,共9页Chemical Industry and Engineering Progress

基　　金：陕西省重点研发计划(2022GY-351);西安市科技创新人才服务企业项目(2020KJRC0024);西安市碑林区2020年应用技术研发类项目(GX2001);西安工程大学研究生创新基金(chx2022001);国家自然科学基金青年科学基金(21908171);陕西省自然科学基础研究计划(2020JQ-825)。

摘　　要：以茉莉香精为芯材,以异氟尔酮二异氰酸酯(IPDI)分别与二乙烯三胺(DETA)、β-环糊精(β-CD)及β-CD/DETA反应物为壁材,采用界面聚合法制备了聚脲、聚氨酯、聚脲/聚氨酯3种不同结构壳体的香精微胶囊。探究了不同微胶囊壳体对微胶囊表观形貌、热稳定性、香精微胶囊缓释性的影响并通过动力学模型分析了香精扩散方式。结果表明,以β-CD/DETA制备的聚脲/聚氨酯复合壳体微胶囊成囊性优异,壳体致密完整,热稳定性和缓释性能最好,经其整理的纺织品可保持较浓香味90多天。3种香精微胶囊在100℃、120℃高温缓释数据均符合零级、一级、Ritger-Peppas及Higuchi动力学模型。聚脲/聚氨酯复合壳体Ritger-Peppas方程拟合后n值更加接近0.45,更符合Fick扩散,缓释性能更好。Flavor microcapsules with three different structural shells of polyurea,polyurethane and polyurea/polyurethane were prepared by interfacial polymerization using jasmine flavor as the core material and isoflurone diisocyanate(IPDI)with diethylenetriamine(DETA),β-cyclodextrin(β-CD)andβ-CD/DETA reactants as the wall material,respectively.The effects of different microcapsules shells on the microcapsules’apparent morphology,thermal stability and flavor microcapsules’slow release were investigated,and the flavor diffusion mode was analyzed by kinetic model.The results showed that the polyurea/polyurethane composite shell microcapsules prepared withβ-CD/DETA had excellent capsule formation,dense and complete shells,the best thermal stability and slow release performance,and the textiles finished by them could maintain a strong fragrance for more than 90 days.The data of high-temperature slow release of the three flavor microcapsules at 100℃and 120℃were in accordance with the zero-level,first-level,Ritger-Peppas and Higuchi kinetic models.The Ritger-Peppas equation fitted to the polyurea/polyurethane composite shell had an n-value closer to 0.45,which was more consistent with Fick diffusion and better retarding performance.

关 键 词：界面 聚合 香精 微胶囊 动力学模型 

分 类 号：TB34[一般工业技术—材料科学与工程] TQ657[化学工程—精细化工]