Citation: Liu-qing Yang, Lu Lu, Chao-wen Zhang, Chang-ren Zhou. Highly Stretchable and Self-healing Hydrogels Based on Poly(acrylic acid) and Functional POSS[J]. Chinese Journal of Polymer Science, ;2016, 34(2): 185-194. doi: 10.1007/s10118-016-1744-1 shu

Highly Stretchable and Self-healing Hydrogels Based on Poly(acrylic acid) and Functional POSS

1.
Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China

Received Date: 7 August 2015
Revised Date: 22 September 2015

Fund Project: This work was financially supported by the Natural Science Foundation of Guangdong Province (No. 2014A030313379) and the National Natural Science Foundation of China (Nos. 81171459 and 31400824).

Herein, we present a novel way for the production of self-healing hydrogels with stretch beyond 4200% than their initial length and relatively high tensile strength (0.1-0.25 MPa). Furthermore, the hydrogel was insensitive to notch. Even for the samples containing V-notches, a stretch of 2300% was demonstrated. The hydrogels were developed by in situ crosslinking of the self-assembled colloidal poly(acrylic acid) (PAA)/functionalized polyhedral oligomeric silsesquioxane (POSS) micelles. This was achieved by the addition of functionalized polyhedral oligomeric silsesquioxane with tertiary amines and hydroxyls (POSS-AH) into the PAA reaction solution. The POSS-AH led to micellar growth, then the dual-crosslinked network was constructed. One type of crosslink was formed by hydrogen-bonding and ionic interactions between PAA chains and POSS-AH, the other type of crosslink was formed by covalent bonds between PAA and bis(N,N'-methylene-bis-acrylamide).
- Hydrogel,
- Highly stretchable,
- Self-healing,
- Poly(acrylic acid),
- Functionalized polyhedral oligomeric silsesquioxane
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沈阳化工大学材料科学与工程学院沈阳 110142