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Highly transparent, self-healing, injectable and self-adhesive chitosan/polyzwitterion-based double network hydrogel for potential 3D printing wearable strain sensor.
- Source :
-
Materials Science & Engineering: C . Dec2020, Vol. 117, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- A purely physically crosslinked double network (DN) hydrogel, poly(sulfobetaine- co -acrylic acid)/chitosan-citrate (P(SBMA-co-AAc)/CS-Cit) DN hydrogel, was prepared based on electrostatic interaction and hydrogen bonding between the polymer chains. The hydrogel is highly stretchable, transparent, anti-fatigue, self-adhesive and has good self-healing properties with a self-healing efficiency as high as 95.4%. Furthermore, the resistance of the P(SBMA-co-AAc)/CS-Cit DN hydrogel is sensitive to a wide strain window and the relative resistance shows stable and reliable change during deformation. Herein, the hydrogel was demonstrated as a strain sensor to detect human motions, such as joint bending and swallowing. More excitingly, before ionic crosslinking, the P(SBMA-co-AAc)/CS-Cit composite hydrogel is injectable, thus the P(SBMA-co-AAc)/CS-Cit DN hydrogel sensor can be made into various complex shapes by injecting the P(SBMA-co-AAc)/CS-Cit composite hydrogel into citrate solution, including multilayer structures, exhibiting a great potential for applications as 3D printing strain sensors. Unlabelled Image • A purely physically crosslinked P(SBMA-co-AAc)/CS-Cit DN hydrogel was successfully prepared. • The hydrogel is highly stretchable, transparent, anti-fatigue, self-adhesive and has good self-healing properties. • The hydrogel is sensitive to a wide strain window and the relative resistance shows stable and reliable change. • The hydrogel is injectable, exhibiting a great potential for applications as 3D printing strain sensors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09284931
- Volume :
- 117
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: C
- Publication Type :
- Academic Journal
- Accession number :
- 145654561
- Full Text :
- https://doi.org/10.1016/j.msec.2020.111298