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文章编号： 1672-6987（2024）06-0079-06； DOI： 10.16351/j.1672-6987.2024.06.010
刘大营， 徐凯， 黄莎莎， 张建明*（青岛科技大学 高分子科学与工程学院；橡塑材料与工程教育部重点实验室，山东 青岛266042）
摘要： 开发了一种新型的双电性β-甲壳素纳米纤维。首先，以部分脱乙酰化的β-甲壳素为原料，经过TEMPO/NaClO2/NaClO氧化在其表面修饰上羧基官能团，然后再对其碱处理脱除乙酰氨基形成氨基，最后经过超声离心后获得了双电性β-甲壳素纳米纤维。该纳米纤维在酸性和碱性条件下良好的分散，具有广泛的pH稳定范围。通过调控双电性β-甲壳素纳米纤维表面电荷电离程度，纳米纤维在碱性条件下对环氧大豆油表现出了良好的乳化效果，展现了作为Pickering乳化剂的应用潜力。
关键词： 甲壳素纳米纤维； β-甲壳素； TEMPO氧化； 碱处理； 双电性
中图分类号： O 636.1文献标志码： A
引用格式： 刘大营， 徐凯， 黄莎莎， 等. 双电性β-甲壳素纳米纤维的制备及其在皮克林乳液中的应用［J］. 青岛科技大学学报(自然科学版), 2024, 45（6）： 79-84.
LIU Daying, XU Kai, HUANG Shasha, et al. Preparation of zwitterionic β-chitin nanofibers and its application in Pickering emulsion［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2024， 45（6）： 79-84.
Preparation of Zwitterionic β-chitin Nanofibers and
Its Application in Pickering Emulsion
LIU Daying, XU Kai, HUANG Shasha, ZHANG Jianming
(College of Polymer Science and Engineering； Key Laboratory of Rubber-Plastics, Ministry of Education,
Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: In this study, a novel zwitterionic β-chitin nanofiber was developed. Firstly, the partially deacetylated β-chitin was subjected to TEMPO/NaClO2/NaClO oxidation and carboxyl groups were introduced into its surface, followed by alkali treatment to remove the acetylamino groups on chitin to form amino groups. Finally, after ultrasonic and centrifugal treatment, the zwitterionic β-chitin nanofibers were obtained. The nanofibers can be stably dispersed under acidic and alkaline conditions, which indicates that it has a good stability in a wide pH range. By modulating the degree of charge ionization on the surface of the zwitterionic β-chitin nanofibers, the nanofibers showed good emulsification of epoxidized soybean oil under alkaline conditions, demonstrating its potential application as Pickering emulsifier. The development of this novel zwitterionic β-chitin nanofiber is helpful to promote the application of chitin nanomaterials.
Key words: chitin nanofibers; β-chitin; TEMPO oxidation; alkali treatment; zwitterionic
收稿日期： 2024-01-02
基金项目： 国家自然科学基金项目 (21774068).
作者简介： 刘大营 (1996-),男,硕士研究生.*通信联系人.
