Highly Flexibility, Powder Self-Healing, and Recyclable Natural Polymer Hydrogels

Haiyue Miao; Weiju Hao; Hongtao Liu; Yiyang Liu; Xiaobin Fu; Hailong Huang; Min Ge; Yuan Qian

doi:10.3390/gels8020089

Gels (Jan 2022)

Highly Flexibility, Powder Self-Healing, and Recyclable Natural Polymer Hydrogels

Haiyue Miao,
Weiju Hao,
Hongtao Liu,
Yiyang Liu,
Xiaobin Fu,
Hailong Huang,
Min Ge,
Yuan Qian

Affiliations

Haiyue Miao: School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
Weiju Hao: School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
Hongtao Liu: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Yiyang Liu: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Xiaobin Fu: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Hailong Huang: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Min Ge: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Yuan Qian: Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

DOI: https://doi.org/10.3390/gels8020089
Journal volume & issue: Vol. 8, no. 2
p. 89

Abstract

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Based on the good self-healing ability to repair mechanical damage, self-healing hydrogels have aroused great interest and been extensively applied as functional materials. However, when partial failure of hydrogels caused by breaking or dryness occurs, leading to recycling problems, self-healing hydrogels cannot solve the mentioned defects and have to be abandoned. In this work, a novel recyclable and self-healing natural polymer hydrogel (Chitosan/polymethylacrylic acid-: CMA) was prepared. The CMA hydrogel not only exhibited controlled mechanical properties from 26 kPa to 125 kPa with tensile strain from 1357% to 3012%, but also had good water retaining property, stability and fast self-healing properties in 1 min. More importantly, the CMA hydrogel displayed attractive powder self-healing performance. After drying–powdering treatment, the mentioned abandoned hydrogels could easily rebuild their frame structure to recover their original state and performance in 1 min only by adding a small amount of water, which could significantly prolong their service life. These advantages guarantee the hydrogel can effectively defend against reversible mechanical damage, water loss and partial hydrogel failure, suggesting great potential applications as a recyclable functional hydrogel for biomaterials and electronic materials.

Published in Gels

ISSN: 2310-2861 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Inorganic chemistry; Science: Chemistry: General. Including alchemy
Website: http://www.mdpi.com/journal/gels

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