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首页> 外文期刊>Advanced Functional Materials >A Moisture-Driven Actuator Based on Polydopamine-Modified MXene/Bacterial Cellulose Nanofiber Composite Film
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A Moisture-Driven Actuator Based on Polydopamine-Modified MXene/Bacterial Cellulose Nanofiber Composite Film

机译：一种基于聚二胺改性的MXENE /细菌纤维素纳米纤维复合膜的湿气驱动致动器

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摘要

As a new 2D material, MXene (Ti3C2Tx) shows great potential as a smart multifunctional humidity-responsive actuator due to its high hydrophilicity and conductivity but suffers from ambient oxidation and mechanical brittleness. Inspired by the mussels, the authors overcome these weaknesses by designing and fabricating a nacre-like and lamellar-structured composite film that consists of polydopamine-modified MXene and bacterial cellulose nanofibers, which shows improved properties as a moisture-driven actuator. The actuator has high conductivity (2848 S cm(-1)), excellent tensile strength (406 MPa), and toughness (15.3 MJ m(-3)). Moreover, the actuator is highly sensitive to moisture with the advantages of fast response (1.6 s), large deformation (176 degrees), and high actuation force output (6.5 N m(-2)). It is additionally demonstrated that the actuator works as the electrical switch, robotic arm, and motor in a moisture-driven manner. Overall, it is believed that this work improves the drawbacks of current MXene-based actuators, laying the groundwork for their wider applications as moisture-driven devices.
机译：作为新的2D材料，MXENE（TI3C2TX）由于其高亲水性和电导率而显示为智能多功能湿度响应致动器的巨大潜力，但受到环境氧化和机械脆性的影响。作者灵感来自贻贝，作者通过设计和制造珍珠蛋白和层状结构复合膜来克服这些弱点，包括聚二胺改性的蒙皮和细菌纤维素纳米纤维，其显示出改善的性能作为湿气驱动的致动器。致动器具有高导电性（2848℃（-1）），优异的拉伸强度（406MPa）和韧性（15.3MJ m（-3））。此外，致动器对水分高度敏感，响应快（1.6秒），大变形（176度）和高致动力输出（6.5 n m（-2））。另外证明致动器以防潮的方式用作电动开关，机器人臂和电动机。总的来说，据信这项工作改善了基于MXENE的执行器的缺点，将其更广泛应用的基础铺设为湿气驱动的装置。

著录项

  • 来源
    《Advanced Functional Materials》 |2021年第27期|2101378.1-2101378.11|共11页
  • 作者

    Yang Luyu; Cui Jian; Zhang Lei; Xu Xuran; Chen Xiao; Sun Dongping;

  • 作者单位

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

    Nanjing Univ Sci & Technol Sch Chem Engn Inst Chem & Funct Mat 200 Xiao Ling Wei Nanjing 210094 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    actuators; bacterial cellulose; moisture-driven actuators;

    机译：执行器;细菌纤维素;湿气驱动的致动器;

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