Hydrophobic association hydrogel with toughness, high stretch, and sensitivity for flexible sensing DOI

Qiong Shu,

Yizhong Yuan, Jinyu Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 12, 2024

Abstract Polypyrrole (PPy), as a highly conductive polymer, is limited in application due to the difficulty of uniform dispersion hydrogels. To improve compatibility PPy with hydrogels, xanthan gum (XG) employed an emulsifier homogeneously disperse pyrrole (Py) water. XG used template for situ polymerization, and coated on form nanoparticles (PX) core‐shell structure, enabling be dispersed uniformly water long time. PX are combined pure hydrophobic association hydrogel (HA) HA/PX nanocomposite hydrogel. The 2% hydrogels exhibiting high toughness (equivalent 5.1 MJ/m 3 ) sensitivity (GF = 11.07 600%–1400% strain range) prepared by combining dynamic cross‐linking sites, well hydrogen bonding between cross‐linked network. test results show that sensor has excellent sensing durability (800 cycles 100% strain) ability accurately detect human joint movements voice recognition handwriting recognition. new method preparation flexible electronic materials, which great promise field sensors.

Language: Английский

Soft Thermoplastic Polyurethane/Silver Nanowire Membranes with Low Hysteresis for Large Strain Sensing and Joule Heating DOI

Chunfa Ye,

Tianyu Cang,

Jixiang Zhu

et al.

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Language: Английский

Citations

4
Bioinspired Antiswelling Hydrogel Sensors with High Strength and Rapid Self-Recovery for Underwater Information Transmission DOI

Shenxin Pan,

Chao Chang, Gang Wu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Hydrogel-based sensors typically demonstrate conspicuous swelling behavior in aqueous environments, which can severely compromise the mechanical integrity and distort sensing signals, thereby considerably constraining their widespread applicability. Drawing inspiration from multilevel heterogeneous structures biological tissues, an antiswelling hydrogel sensor endowed with high strength, rapid self-recovery, low ratio was fabricated through a water-induced phase separation coordination cross-linking strategy. A dense architecture developed by integration of "rigid" quadridentate carboxyl-Zr4+ bonds "soft" hydrophobic unit-rich regions featuring π-π stacking cation-π interactions into hydrogels. This unique structural design facilitated progressive breaking cross-links within network to under external loads, effectively dissipating energy imparting hydrogels exceptional characteristics, evidenced strength 1.42 MPa, complete self-recovery 3 min. Simultaneously, dynamic synergistically conferred augmented elastic retractive forces on enhancing density, providing prominent capabilities water (with only -2.49%), solutions diverse pH (1-9), seawater. Moreover, manifested favorable strain-sensitivity (gauge factor up 2.45) frequency response virtue collaborative contribution ions (Cl- Zr4+). Consequently, were utilized assemble underwater capacity transmit information using Morse code. bioinspired methodology achieved desired mechanical, swelling-resistant, performance hydrogels, contributing innovative insights toward advancement technology.

Language: Английский

Citations

0
Lignin-Mediated Dual Conductive Hydrogels with High Conductivity, Antibacterial Activity and Biocompatibility for Chronic Wound Repair DOI Creative Commons

Jianhong Lin,

Mengyao Chen,

Wei Zhao

et al.

Gels, Journal Year: 2025, Volume and Issue: 11(4), P. 283 - 283

Published: April 11, 2025

In recent years, conductive polymer hydrogels based on polypyrrole (PPy) combined with electrical stimulation (ES) have emerged as a promising approach for chronic wound repair. However, in practical applications, PPy often exhibits limitations such poor water dispersion, weak inherent conductivity and lack of biological functionality. To address these challenges, this study proposes an innovative design hydrogel that employs natural biopolymer, lignin sulfonate (Lgs), both dispersant dopant PPy, while incorporating silver nanoparticles (Ag NPs) to confer the antibacterial properties. The results showed dispersion was significantly improved, high 2.82 ± 0.04 mS/cm through double conduction mechanism Ag NPs. exhibited activity against Escherichia coli (E. coli) Staphylococcus aureus (S. aureus), rate could exceed 90%. vitro tests demonstrated good biocompatibility, adhesion ability (7.97 0.56 kPa) hemostatic ability. Furthermore, vivo animal experiments ES achieved 93.71 2.46% closure within 14 days, which can accelerate healing, promote collagen deposition epithelial tissue regeneration. These findings demonstrate developed serve effective platform ES-assisted

Language: Английский

Citations

0
Hydrophobic association hydrogel with toughness, high stretch, and sensitivity for flexible sensing DOI

Qiong Shu,

Yizhong Yuan, Jinyu Sun

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 12, 2024

Abstract Polypyrrole (PPy), as a highly conductive polymer, is limited in application due to the difficulty of uniform dispersion hydrogels. To improve compatibility PPy with hydrogels, xanthan gum (XG) employed an emulsifier homogeneously disperse pyrrole (Py) water. XG used template for situ polymerization, and coated on form nanoparticles (PX) core‐shell structure, enabling be dispersed uniformly water long time. PX are combined pure hydrophobic association hydrogel (HA) HA/PX nanocomposite hydrogel. The 2% hydrogels exhibiting high toughness (equivalent 5.1 MJ/m 3 ) sensitivity (GF = 11.07 600%–1400% strain range) prepared by combining dynamic cross‐linking sites, well hydrogen bonding between cross‐linked network. test results show that sensor has excellent sensing durability (800 cycles 100% strain) ability accurately detect human joint movements voice recognition handwriting recognition. new method preparation flexible electronic materials, which great promise field sensors.

Language: Английский

Citations

1