Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Reversibly Transforming a Highly Swollen Polyelectrolyte Hydrogel to an Extremely Tough One and its Application as a Tubular Grasper

Reversibly Transforming a Highly Swollen Polyelectrolyte Hydrogel to an Extremely Tough One and... Poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) and its copolymer hydrogels are typical polyelectrolyte gels with extremely high swelling capacity that are widely used in industry. It's common to consider these hydrogels as weak materials that are difficult to toughen. Reported here is a facile strategy to transform swollen and weak poly(acrylamide‐co‐2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) [P(AAm‐co‐AMPS)] hydrogels to tough ones by forming strong sulfonate–Zr4+ metal‐coordination complexes. The resultant hydrogels with moderate water content possess high stiffness, strength, and fracture energy, which can be tuned over 3–4 orders of magnitude by controlling the composition and metal‐to‐ligand ratio. Owing to the dynamic nature of the coordination bonds, these hydrogels show rate‐ and temperature‐dependent mechanical performances, as well as good self‐recovery properties. This strategy is universal, as manifested by the drastically improved mechanical properties of hydrogels of various natural and synthetic sulfonate‐containing polymers. The toughened hydrogels can be converted to the original swollen ones by breaking up the metal‐coordination complexes in alkaline solutions. The reversible brittle–tough transition and concomitant dramatic volume change of polyelectrolyte hydrogels afford diverse applications, as demonstrated by the design of a tubular grasper with holding force a thousand times its own weight for objects with different geometries. It is envisioned that these hydrogels enable versatile applications in the biomedical and engineering fields. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Materials Wiley

Reversibly Transforming a Highly Swollen Polyelectrolyte Hydrogel to an Extremely Tough One and its Application as a Tubular Grasper

Loading next page...
 
/lp/wiley/reversibly-transforming-a-highly-swollen-polyelectrolyte-hydrogel-to-XZX9Q609hE

References (68)

Publisher
Wiley
Copyright
© 2020 Wiley‐VCH GmbH
ISSN
0935-9648
eISSN
1521-4095
DOI
10.1002/adma.202005171
Publisher site
See Article on Publisher Site

Abstract

Poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) and its copolymer hydrogels are typical polyelectrolyte gels with extremely high swelling capacity that are widely used in industry. It's common to consider these hydrogels as weak materials that are difficult to toughen. Reported here is a facile strategy to transform swollen and weak poly(acrylamide‐co‐2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) [P(AAm‐co‐AMPS)] hydrogels to tough ones by forming strong sulfonate–Zr4+ metal‐coordination complexes. The resultant hydrogels with moderate water content possess high stiffness, strength, and fracture energy, which can be tuned over 3–4 orders of magnitude by controlling the composition and metal‐to‐ligand ratio. Owing to the dynamic nature of the coordination bonds, these hydrogels show rate‐ and temperature‐dependent mechanical performances, as well as good self‐recovery properties. This strategy is universal, as manifested by the drastically improved mechanical properties of hydrogels of various natural and synthetic sulfonate‐containing polymers. The toughened hydrogels can be converted to the original swollen ones by breaking up the metal‐coordination complexes in alkaline solutions. The reversible brittle–tough transition and concomitant dramatic volume change of polyelectrolyte hydrogels afford diverse applications, as demonstrated by the design of a tubular grasper with holding force a thousand times its own weight for objects with different geometries. It is envisioned that these hydrogels enable versatile applications in the biomedical and engineering fields.

Journal

Advanced MaterialsWiley

Published: Dec 1, 2020

Keywords: ; ; ; ;

There are no references for this article.