Vol.9, No.8, 2021, pp.1365-1376, doi:10.32604/jrm.2021.014909
OPEN ACCESS
ARTICLE
The Preparation and Properties of Starch Based Shape Memory Hydrogel
  • Yangling Li1, Zhengrong Li1, Hui Yu1, Gang Huang1, Xiaopeng Pei2, Kun Xu2,*, Pixin Wang2, Ying Tan3,*
1 School of Textile Materials and Engineering, Wuyi University, Jiangmen, 529000, China
2 Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, China
3 Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
* Corresponding Authors: Kun Xu. Email: ; Ying Tan. Email:
(This article belongs to this Special Issue: Biomass-Derived Functional Hydrogels)
Received 07 November 2020; Accepted 31 December 2020; Issue published 08 April 2021
Abstract
In this work, the –catechol and –thiol modified starch was prepared by the esterification and amino condensation reaction, then a fully starch based hydrogel was prepared via the thiol-catechol Michael addition reaction. The starch hydrogel gained shape memory behaviors by coordinate with Fe3+ ions at alkaline condition. 1 H-NMR had been used to character the structure of the starch derivatives and its character peaks. The hydrogel’s modulus had also been measured before and after coordinating with Fe3+ ions in linear area and the result showed that both the hydrogel’s storage modulus and loss modulus kept constant in linear area from 0.1 rad/s to 100 rad/s, which demonstrated a good network was formed inside the hydrogel. Furthermore, the shape memory behaviors had been tested by changing the pH value in solution. The result showed that the hydrogel can keep its temporary shape in high pH condition and recover to its original state after the shaped hydrogel immersed into acidic solution. This hydrogel might have great application prospects in the field of biomedical and engineering.
Keywords
Starch; thiol-catechol Michael addition reaction; shape memory
Cite This Article
Li, Y., Li, Z., Yu, H., Huang, G., Pei, X. et al. (2021). The Preparation and Properties of Starch Based Shape Memory Hydrogel. Journal of Renewable Materials, 9(8), 1365–1376.
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