Recyclable Chitosan-Modified Cellulose Fiber Porous Structure for Sensitive and Robust Moisture-Driven Actuators and Automatic Cooling Textiles DOI

Jiaying Zhu,

Penghui Zhu, Yuhang Ye

и другие.

Nano Letters, Год журнала: 2024, Номер 24(44), С. 14073 - 14081

Опубликована: Окт. 28, 2024

Moisture-driven actuators featuring programmable stimuli-responsiveness and a rapid response have garnered substantial research attention. Cellulose-based face challenges, including prolonged unstable responsiveness, along with inadequate interfacial bonding. Herein, we developed bilayer structured moisture actuator by integrating multiscale cellulose fibers chitosan. The protonated chitosan forms strong electrostatic attractions negatively charged nanofibrils (CNF), achieving robust interaction. Leveraging the hierarchically porous structure varying hygroscopicity of microfibrillated (MFC) CNF, film establishes an effective wettability gradient, enabling stable actuation performance. exhibits large deformation toward bending angle 60°, short time 12 s, good stability over 50 wetting drying cycles, promising recyclability. Harnessing these advantageous properties, was demonstrated for its applications in automatic cooling textiles, contactless electrical switches, artificial moisture-activated muscles, showing great potential practical use.

Язык: Английский

Recyclable Chitosan-Modified Cellulose Fiber Porous Structure for Sensitive and Robust Moisture-Driven Actuators and Automatic Cooling Textiles DOI

Jiaying Zhu,

Penghui Zhu, Yuhang Ye

и другие.

Nano Letters, Год журнала: 2024, Номер 24(44), С. 14073 - 14081

Опубликована: Окт. 28, 2024

Moisture-driven actuators featuring programmable stimuli-responsiveness and a rapid response have garnered substantial research attention. Cellulose-based face challenges, including prolonged unstable responsiveness, along with inadequate interfacial bonding. Herein, we developed bilayer structured moisture actuator by integrating multiscale cellulose fibers chitosan. The protonated chitosan forms strong electrostatic attractions negatively charged nanofibrils (CNF), achieving robust interaction. Leveraging the hierarchically porous structure varying hygroscopicity of microfibrillated (MFC) CNF, film establishes an effective wettability gradient, enabling stable actuation performance. exhibits large deformation toward bending angle 60°, short time 12 s, good stability over 50 wetting drying cycles, promising recyclability. Harnessing these advantageous properties, was demonstrated for its applications in automatic cooling textiles, contactless electrical switches, artificial moisture-activated muscles, showing great potential practical use.

Язык: Английский

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