Mechanically tough and highly stretchable poly(acrylic acid) hydrogel cross-linked by 2D graphene oxide

Abstract

Incorporation of a novel GO based cross-linker into the conventional poly(acrylic acid) hydrogel remarkably enhances the toughness and stretchability.

A Review of the Use of GPEs in Zinc-Based Batteries. A Step Closer to Wearable Electronic Gadgets and Smart Textiles

“…The soaking or immersing strategy is more effective for reinforcing the PVA hydrogel than simply casting a mixture of both components [277]. Usually PAA is cross-linked using MBA, (N,N'-methylenebisacrylamide) but it can also be done with 2D graphene oxide as to get mechanically tough and highly stretchable hydrogels [278].…”

Improvement of the strength of poly(acrylic acid) hydrogels by the incorporation of functionally modified nanocrystalline Cellulose

“…Stress was calculated following the equation s = F/A, where F is the recorded load, and A is the cross-section area of the specimen, and the strain (e) of the samples was calculated from the ratio of elongation of the sample length (Dl) compared to the initial length (l o ), e = Dl/l o . 12 The Young's modulus was calculated from the initial slope of the stressÀstrain curve. The toughness of each specimen was calculated by integrating the area underneath the stress-strain profile obtained from the tensile test.…”

“…Incorporation of synthetic crosslinkers like N,N 0 -methylenebisacrylamide (MBA) for the formation of an integrated polymer network by making numerous covalent crosslinking points is a general trend to improve the mechanical properties of hydrogels. Besides, reinforcing strategies by the incorporation of functionalized nanomaterials as additives or filler materials such as clays, 8 silica nanoparticles, 9 carbon nanotubes, 10 ferritin particles, 11 and graphene oxide, 12 etc. to prepare nanocomposite hydrogels have also attracted great attention due to the easy fabrication process.…”

Graphene oxide crosslinker for the enhancement of mechanical properties of polylactic acid

“…[28][29][30] Moreover, among the carbonaceous materials, GO has attracted great attention to crosslink polymeric systems due to its unique two dimensional high surface area (2630 m 2 /g) consist of oxygencontaining carboxyl, hydroxyl, and epoxide functional groups, suitable for further modifications. [31][32][33][34][35] Although there are some reports on the GO reinforced PLA composite, they either involved a complicated preparation or did not achieve desired mechanical performance because of the incompatibility and inability of the filler material to form any strong bonds with the polymer chain and thereby crosslink them. 24,35,36 Herein, we prepared GO based crosslinker (GO-LA) by chemically functionalized GO with LA through an esterification reaction between the COOH functional groups of GO and OH groups of LA.…”