Double-Network Strategy Improves Fracture Properties of Chondroitin Sulfate Networks
Citations Over TimeTop 10% of 2013 papers
Abstract
A tough and ductile, ultrathin film, double-network (DN), biopolymer-based hydrogel displaying the yielding phenomenon was synthesized from methacrylated chondroitin sulfate (MCS) and polyacrylamide (PAAm). The DN of MCS/PAAm exhibited a failure stress more than 20 times greater than the single network (SN) of either MCS or PAAm and exhibited yielding stresses over 1500 kPa. In addition, the stress-strain behavior with a yielding region was also seen in a hydrogel of MCS and poly(N,N-dimethyl acrylamide) (PDMAAm). By replacing PAAm with PDMAAm, interactions known to toughen networks are removed. This demonstration supports the idea that the brittle/ductile combination is key to the DN effect over specific interactions between the networks. The MCS/PAAm and MCS/PDMAAm DN hydrogels had comparable mechanical properties to the archtypal DN hydrogels of poly(2-acrylamido-2-methylpropanesulfonic acid) (PAMPS)/PAAm. In addition, these tough and ductile, biopolymer-based, double-network hydrogels demonstrated a substantial yielding region.
Related Papers
- → Amended Final Report on the Safety Assessment of Polyacrylamide and Acrylamide Residues in Cosmetics1(2005)141 cited
- → Gellan gum microgel-reinforced cell-laden gelatin hydrogels(2013)58 cited
- → Mechanical stabilization of large pore acrylamide gels by addition of linear polyacrylamide(1985)8 cited
- Research on Optimizing the Technology for Producing Polyacrylamide(2008)
- → Feature(1993)