A UV-induced self-reinforced hydrogel based on<i>in situ</i>hydrophobic aggregation of strained 1,2-dithiolane rings

Zhong, Huiqing; Tan, Qinwen; Zhan, Dezhi; Wang, Aolin; Jiang, Yu; Zhang, Daohong

doi:10.1039/d2cc06124d

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2024

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Cited by 3 publications

References 31 publications

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Robust and stretchable Ti3C2Tx MXene/PEI conductive composite dual-network hydrogels for ultrasensitive strain sensing

Xie,

Su,

Fan

et al. 2024

Composites Part A: Applied Science and Manufacturing

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Robust and stretchable Ti3C2Tx MXene/PEI conductive composite dual-network hydrogels for ultrasensitive strain sensing

Xie,

Su,

Fan

et al. 2024

Composites Part A: Applied Science and Manufacturing

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Antidehydration and Stable Mechanical Properties during the Phase Transition of the PNIPAM-Based Hydrogel for Body-Temperature-Monitoring Sensors

Zhang,

Ding,

Zhou

et al. 2024

ACS Appl. Mater. Interfaces

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Poly(N-isopropylacrylamide) (PNIPAM) enhances the reversibility and responsiveness of wearable temperature-sensitive devices. However, an open question is whether and how the hydrogel design can prevent adhesive performance loss caused by phase-transition-induced dehydration and unstable mechanical properties between devices and human skin and reduce interfacial failure. Herein, a gelatin-mesh scaffoldbased hydrogel (NAGP-Gel) is constructed to inhibit dehydration and volume change, leading to stable mechanical properties, superior adhesiveness, and thermal sensing sensitivity during the phase transition. NAGP-Gel enhances the polymer chains−water interaction and weakens the degree of aggregation of polymer chains−chains, improving antidehydration properties under 45 °C conditions that are higher than the lower critical solution temperature (LCST; i.e., ∼32 °C). The mesh scaffold greatly restricts the phase-transition-induced polymer chain movement and maintains the mechanical performance. In a 60 °C environment, the maximum water loss and volume retention ratio of NAGP-Gel are only 3.58% and 97.3%, respectively. Additionally, NAGP-Gel serves as a temperature sensor, producing a stable thermal−electrical signal within the LCST range. It also can be assembled into an electronic device enabling the transmission of information and recognition of sign language via Morse code. This work broadens the application of PNIPAM in constructing intelligent hydrogels and opens the door to exploring emerging hydrogels for temperature-monitoring applications.

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Anti-Dehydration and Stable Mechanical Properties During the Phase Transition of the Pnipam-Based Hydrogel for Body Temperature Monitoring Sensors

Zhang,

Ding,

Zhou

et al. 2024

Preprint

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A UV-induced self-reinforced hydrogel based onin situhydrophobic aggregation of strained 1,2-dithiolane rings

Abstract: A novel responsive hydrogel exhibiting self-reinforcement and self-healing capacity was developed based on the hydrophobic aggregation of strained 1,2-dithiolane rings. Oligomerization of 1,2-dithiolane within hydrophobic domains under UV irradiation not...

Cited by 3 publications

References 31 publications

Robust and stretchable Ti3C2Tx MXene/PEI conductive composite dual-network hydrogels for ultrasensitive strain sensing

Robust and stretchable Ti3C2Tx MXene/PEI conductive composite dual-network hydrogels for ultrasensitive strain sensing

Antidehydration and Stable Mechanical Properties during the Phase Transition of the PNIPAM-Based Hydrogel for Body-Temperature-Monitoring Sensors

Anti-Dehydration and Stable Mechanical Properties During the Phase Transition of the Pnipam-Based Hydrogel for Body Temperature Monitoring Sensors

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