现代纺织技术 ›› 2022, Vol. 30 ›› Issue (2): 148-158.DOI: 10.19398/j.att.202103032

• 染化工程 • 上一篇    下一篇

壳聚糖-薄荷精油微胶囊的制备及其性能

王秋萍1, 倪张根2, 崔慧明2, 林涛2, 杨云2, 张瑞萍1()   

  1. 1.南通大学纺织服装学院,江苏南通 226019
    2.梦百合家居科技股份有限公司,江苏南通 226019
  • 收稿日期:2021-03-21 出版日期:2022-03-10 网络出版日期:2021-07-08
  • 通讯作者: 张瑞萍,E-mail: zhang.rp@ntu.edu.cn
  • 作者简介:王秋萍(1995-),女,江苏南通人,硕士研究生,主要从事纺织品功能整理方面的研究。
  • 基金资助:
    江苏省产学研合作前瞻性联合研究项目(BY2015047-03);江苏省产学研项目(BY2020209);江苏省大学生创新训练计划项目(202013993007z)

Preparation and properties of chitosan-peppermint oil microcapsules

WANG Qiuping1, NI Zhanggen2, CUI Huiming2, LIN Tao2, YANG Yun2, ZHANG Ruiping1()   

  1. 1. School of Textile and Clothing, Nantong University, Nantong 226019, China
    2. Mlily Household Technology Co., Ltd., Nantong 226019, China
  • Received:2021-03-21 Published:2022-03-10 Online:2021-07-08

摘要:

为了开发缓释型芳香功能材料和纺织品,通过单凝聚法制备薄荷精油微胶囊,以粒径和包埋率为指标,通过单因素法优化薄荷精油微胶囊的制备工艺,利用扫描电子显微镜(SEM)观察微胶囊表面形态;通过红外分析固化前后囊壁分子基团的变化,并测试了薄荷精油微胶囊的缓释性、热稳定性等。结果表明,薄荷精油微胶囊的制备工艺为:以Span80和Tween80复配作为乳化剂,选择分子量约为30000的壳聚糖为壁材,芯材薄荷油与壁材壳聚糖质量比为1∶1,加入质量分数为100%(对壳聚糖用量)的戊二醛固化1 h。薄荷精油微胶囊的平均粒径约为2.8 μm,包埋率达66.67%,常温条件一个月后保留率为65.24%,高温(120℃)2 h后保留率为76.23%,红外分析表明壳聚糖经固化后形成交联结构,热重分析表明薄荷精油微胶囊具有良好的热稳定性。薄荷精油经过微囊化处理后提高了稳定性,有利于进一步拓宽应用范围。

关键词: 壳聚糖, 薄荷精油, 单凝聚, 微胶囊

Abstract:

In order to develop slow-release aromatic functional materials and fabrics, this paper uses single coacervation method to prepare peppermint essential oil microcapsules. Taking particle size and embedding rate as indexes, the preparation process of peppermint essential oil microcapsules is optimized by single factor method. Scanning electron microscope (SEM) is adopted to observe the surface morphology on microcapsules, and infrared analysis is used to analyze the changes of molecular groups in capsule wall before and after curing, and the slow release performance and thermal stability, etc. of peppermint essential oil microcapsules are determined. The results show that the preparation process of peppermint essential oil microcapsules is as follows: by compounding Span80 and Tween80 as an emulsifier, chitosan with a molecular weight of about 30000 is selected as wall material, and the mass ratio between the core material peppermint oil and the wall material chitosan is 1:1, and glutaraldehyde with a mass fraction of 100% (for chitosan) is added for curing for 1 hour. The average particle size of peppermint essential oil microcapsules is about 2.8 μm, and the embedding rate is up to 66.67%. The retention rate is 65.24% after one month at normal temperature and 76.23% after 2 h at high temperature (120℃). Infrared analysis suggests that chitosan forms a cross-linked structure after curing, and thermogravimetric analysis shows that peppermint essential oil microcapsules have good thermal stability. After microencapsulation, the stability of peppermint essential oil is enhanced, which is beneficial to further expansion of the application scope.

Key words: chitosan, peppermint oil, single coacervation, microcapsules

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