4.7 Article

Multi-Sacrificial Bonds Enhanced Double Network Hydrogel with High Toughness, Resilience, Damping, and Notch-Insensitivity

Journal

POLYMERS
Volume 12, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/polym12102263

Keywords

double network ionic hydrogel; multi-sacrifice bonds; high toughness; fast recovery; notch-insensitivity

Funding

  1. Exploratory Challenging Research of Japan Society for the Promotion of Science [19K21923]
  2. Grants-in-Aid for Scientific Research [19K21923] Funding Source: KAKEN

Ask authors/readers for more resources

The engineering applications of hydrogels are generally limited by the common problem of their softness and brittlness. In this study, a composite double network ionic hydrogel (CDN-gel) was obtained by the facile visible light triggered polymerization of acrylic acid (AA), polyvinyl alcohol (PVA), and hydrolyzed triethoxyvinylsilane (TEVS) and subsequent salt impregnation. The resulting CDN-gels exhibited high toughness, recovery ability, and notch-insensitivity. The tensile strength, fracture elongation, Young's modulus, and toughness of the CDN-gels reached up to similar to 21 MPa, similar to 700%, similar to 3.5 MPa, and similar to 48 M/m(3), respectively. The residual strain at a strain of 200% was only similar to 25% after stretch-release of 1000 cycles. These properties will enable greater application of these hydrogel materials, especially for the fatigue resistance of tough hydrogels, as well as broaden their applications in damping.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available