应用化学 ›› 2022, Vol. 39 ›› Issue (9): 1421-1428.DOI: 10.19894/j.issn.1000-0518.210452

• 研究论文 • 上一篇    下一篇

脱氢枞氧基聚氧乙烯缩水甘油醚接枝羟乙基壳聚糖水凝胶制备及其性能

黄旭娟1, 王婷1, 丁正青1, 杨欣欣1,2, 蔡照胜1(), 商士斌2   

  1. 1.盐城工学院化学化工学院,盐城 224051
    2.中国林业科学研究院林产化学工业研究所,南京 210042
  • 收稿日期:2021-09-05 接受日期:2022-05-05 出版日期:2022-09-01 发布日期:2022-09-08
  • 通讯作者: 蔡照胜
  • 基金资助:
    国家自然科学基金项目(32071706);江苏省生物质能源与材料重点实验室开放基金项目(JSBEM201909)

Preparation of Hydrogels Based on Dehydroabietyl Polyoxyethylene Glycidyl Ether Grafted Hydroxyethyl Chitosan and Their Properties

Xu-Juan HUANG1, Ting WANG1, Zheng-Qing DING1, Xin-Xin YANG1,2, Zhao-Sheng CAI1(), Shi-Bing SHANG2   

  1. 1.School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051,China
    2.Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing 210042,China
  • Received:2021-09-05 Accepted:2022-05-05 Published:2022-09-01 Online:2022-09-08
  • Contact: Zhao-Sheng CAI
  • About author:jsyc-czs@163.com
  • Supported by:
    the National Natural Science Foundation of China(32071706);the Jiangsu Provincial Key Lab of Bioenergy and Biomaterial Fund(JSBEM201909)

摘要:

通过脱氢枞醇聚氧乙烯(10)醚(DA(EO)10H)与环氧氯丙烷缩合后,再在NaOH存在下脱氯化氢得到脱氢枞氧基聚氧乙烯(10)缩水甘油醚(DA(EO)10GE),然后通过DA(EO)10GE对羟乙基壳聚糖(HECTS)的接枝制备DA(EO)10GE接枝羟乙基壳聚糖(DA(EO)10GE-g-HECTS),最后利用Genipin对DA(EO)10GE-g-HECTS进行交联,得到DA(EO)10GE-g-HECTS/Genipin水凝胶。研究结果表明:DA(EO)10GE对HECTS糖单元摩尔比的增加能提高DA(EO)10GE-g-HECTS的接枝度,并延长其与Genipin交联形成凝胶的时间;增加Genipin的用量可提高接枝产物与Genipin交联形成凝胶的能力;负载于DA(EO)10GE-g-HECTS/Genipin凝胶中的氯霉素在人工肠液中的累积释放率与时间的关系,可以很好地用Boltzmann函数描述,且提高接枝度和降低Genipin用量有利于提高药物的最终累积释放率;低接枝度DA(EO)10GE-g-HECTS经Genipin交联形成的载药凝胶,其药物释放行为符合一级动力学方程的特征。

关键词: 羟乙基壳聚糖, 脱氢枞氧基聚氧乙烯缩水甘油醚, 水凝胶, 药物释放

Abstract:

Dehydroabietol polyoxyethylene(10) ether (DA(EO)10H) is condensated with epichlorohydrin in the presence of boron fluoride diethyl etherate firstly, and then dehydroabietyl polyoxyethylene glycidyl ether (DA(EO)10GE) is obtained through dehydrochlorination of the condensation product in the presence of NaOH. DA(EO)10GE grafted hydroxyethyl chitosan (DA(EO)10GE-g-HECTS) is prepared through grafting DA(EO)10GE to hydroxyethyl chitosan (HECTS). The hydrogels based on DA(EO)10GE-g-HECTS are prepared through cross-linking reaction between Genipin and DA(EO)10GE-g-HECTSs. The increase of molar ratio of DA(EO)10GE versus sugar unit could result in the increase of grafting degree (DG) of DA(EO)10GE-g-HECTSs, the gelation time of DA(EO)10GE-g-HECTS/Genipin with high DG is longer than that with low DG, and increasing the Genipin amount could improve the capability of DA(EO)10GE-g-HECTS/Genipin to form hydrogel. The relation between the cumulative release rate of Chloramphenicol loaded in DA(EO)10GE-g-HEC/GE gel and times in artificial intestinal fluid could be well described by Boltzmann function, and the final cumulative release rate could be improved by increasing the DG or decreasing the Genipin dosage. The release behavior of drug loaded in the hydrogel which is formed by the cross-linking reaction between DA(EO)10GE-g-HECTS with low DG and Genipin accords with the characteristics of first-order kinetic equation.

Key words: Hydroxyethyl chitosan, Dehydroabietyl polyoxyethylene glycidyl ether, Hydrogels, Drug release

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