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)
Journal of Renewable Materials 2021, 9(8), 1365-1376. https://doi.org/10.32604/jrm.2021.014909
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 Fe
3+ 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 Fe
3+ 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
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. https://doi.org/10.32604/jrm.2021.014909