Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (9): 1421-1428.DOI: 10.19894/j.issn.1000-0518.210452

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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)

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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