Are alginate/polyacrylamide hydrogels strong?

We successfully synthesized a family of alginate/polyacrylamide hydrogels using various multivalent cations. These hydrogels exhibit exceptional mechanical properties. In particular, we discovered that the hydrogels cross-linked by trivalent cations are much stronger than those cross-linked by divalent cations.

How are poly(acrylamide)/alginate double network hydrogels crosslinked?

Poly (acrylamide)/alginate double network hydrogels are commonly crosslinked through ionic interaction by introducing multivalent cations into the hydrogel. Different ion sources and preparation methods have emerged during the last decade, each with its own advantages and limitations.

Can ionically crosslinked alginate network improve mechanical properties of ALG/PAAM hydrogel?

However, most of the research developed to enhance the first ionically crosslinked alginate network limited of using single cation; designing new method according to the special molecular structure of alginate to further improve the mechanical properties of Alg/PAAm hydrogel is desirable.

Which cation strengthens the alginate/PAAM hydrogel?

For example, Yang et al. [ 13] have found that the trivalent cation (M 3+) such as Fe 3+ and Al 3+ could strengthen the alginate/PAAm hydrogel more effectively than divalent one M 2+; similar results also have been reported by Wang et al. [ 11] in the case of Eu 3+ and Tb 3+.

Can polyacrylamide hydrogels be synthesized using multivalent cations?

ADDITION/CORRECTION This article has been corrected. View the notice. We successfully synthesized a family of alginate/polyacrylamide hydrogels using various multivalent cations. These hydrogels exhibit exceptional mechanical properties.

Which crosslinking agents are used to prepare poly(acrylamide)/alginate hydrogels?

This effect was studied for poly (acrylamide)/alginate hydrogels using a variety of crosslinking agents (CaCl 2, FeCl 3, AlCl 3, BaCl 2, and SrCl 2) as well as for preparation methods utilizing different calcium ion sources. Calcium crosslinked P (AAm)/alginate hydrogels can be prepared by using CaCl 2, CaCO 3, or CaSO 4 as ion sources.