Mechanically viscoelastic nanoreinforced hybrid hydrogels composed of polyacrylamide, sodium carboxymethylcellulose, graphene oxide, and cellulose nanocrystals

Carbohydrate Polymers
Anuj KumarSung Soo Han

Abstract

Polyacrylamide-sodium carboxymethylcellulose (PMC) hybrid hydrogels reinforced with graphene oxide (GO) and/or cellulose nanocrystals (CNCs) were prepared via in situ free-radical polymerization. In this work, GO nanosheets were freshly synthesized by modified Hummer's method alongwith the aqueous suspension of CNCs by acid-hydrolysis. In addition, the effect of GO content (1.5 wt%) and CNCs (from 2.5 wt% to 10.0 wt%) was investigated in these quaternary hydrogels. The results showed good pseudo-plastic behavior, self-healing ability, mechanical performance, and shape-recovery behavior of the hybrid hydrogels reinforced with GO and CNCs content. PMC-GO1.5/CNCs10.0 hybrid hydrogel showed 110.5 kPa as compressive strength and stiffness value of 887.7 N/m (at 30% strain). Moreover, the synergistic effect of both GO and CNCs as nanoreinforcements in hydrogels provides a new point of view for the preparation of hybrid hydrogels having exceptional structural and mechanical properties. As-obtained hybrid hydrogels may have potential application in tissue engineering for tunable mechanical properties.

Citations

Dec 2, 2020·Materials·Madalina Oprea, Stefan Ioan Voicu
Dec 2, 2020·International Journal of Biological Macromolecules·Heena KhawajaMuhammad Arif Asghar
Dec 16, 2020·Polymers·Weiguang WangPaulo Bartolo
Feb 12, 2020·International Journal of Biological Macromolecules·Demiana H HannaGamal R Saad
Apr 21, 2019·International Journal of Biological Macromolecules·Shiv Dutt PurohitNarayan Chandra Mishra
Aug 5, 2021·Journal of Biomaterials Science. Polymer Edition·P R SivashankariM Prabaharan
Sep 4, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Anuj Kumar, Sung Soo Han

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