What is a hydrogel polyelectrolyte?

Herein, a highly conductive and compressible hydrogel polyelectrolyte has been prepared from polyacrylamide cross-linked by methacrylated graphene oxide (MGO-PAM) and the polyelectrolyte can maintain its excellent elasticity at −30 °C as well as its original shape at 100 °C.

What is a polyacrylamide hydrogel?

Polyacrylamide hydrogels are routinely synthesized in many laboratories by free radical polymerization (Caulfield et al., 2002) (Fig. 2). A polyacrylamide hydrogel consists of a covalent polymer network and water. The molar ratio of the monomer to the crosslinker ranges from 10 to 10 4. The volume fraction of water varies from 70% to 90%.

Are polyacrylamide hydrogels a model system for highly elastic polymer networks?

This paper belongs to a series in which we use polyacrylamide hydrogels as a model system to study the mechanics of highly elastic polymer networks (Hassan et al., 2022; Kim et al., 2022; Liu et al., 2019; Wang et al., 2021a; Yang et al., 2019).

Does a polyacrylamide hydrogel have elasticity?

Mullins effect It is often assumed that a polyacrylamide hydrogel has near-perfect elasticity. This ideal picture is inconsistent with a real network with imperfection. As the hydrogel is stretched, some polymer chains break before others. The intact chains stabilize the damaged network, so that broken chains distribute throughout the network.

How safe is polyacrylamide hydrogel?

However, to determine safety with more certainty, a larger sample size would be necessary. Polyacrylamide hydrogel is an atoxic, stable, nonresorbable sterile watery gel consisting of approximately 2.5% cross-linked polyacrylamide and nonpyrogenic water.

Does a polyacrylamide hydrogel map network imperfection to mechanical properties?

For a polyacrylamide hydrogel, we have shown that experimental measurements map network imperfection to mechanical properties.