Nanocomposite hydrogel for skin motion sensing - An antifreezing, nanoreinforced hydrogel with decorated AuNP as a multicrosslinker.
J Colloid Interface Sci
; 674: 392-404, 2024 Nov 15.
Article
en En
| MEDLINE
| ID: mdl-38941933
ABSTRACT
In this study, we present a nanocomposite hydrogel designed for skin motion sensing. The hydrogel is based on poly(acrylamide) crosslinked with gold nanoparticles covalently bound to the polymer matrix, yielding a robust, highly elastic and conductive material. The choice of amino acid derivative - N,N'-diacryloylcystine salt (BISS) - as a crosslinker allows for the introduction of gold nanoparticles, due to the presence of sulfide groups in its structure. During the nanoparticle modification process, covalent bonds between gold and sulfur atoms are formed as the disulfide bond is cleaved. In result of this self-assembly process, a multifunctional Au-BISS crosslinker is formed, enhancing the material's mechanical properties and introducing electrical conductivity. To confer anti-freezing properties and limit water evaporation, a binary mixture of water and glycerol was used. The resultant hydrogel exhibits high elasticity, strain sensitivity across a wide strain range and various types of deformation (elongation, bending, compression) with exceptional response time (120 ms) and recovery time (90 ms). The material's cold-resistance, resilience, and conductivity make it well-suited for real-time monitoring of joint movements and speech recognition, with potential applications in electronic skin and healthcare monitoring devices.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Hidrogeles
/
Nanocompuestos
/
Nanopartículas del Metal
/
Oro
Límite:
Humans
Idioma:
En
Revista:
J Colloid Interface Sci
Año:
2024
Tipo del documento:
Article
País de afiliación:
Polonia
Pais de publicación:
Estados Unidos