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首页> 外文期刊>Advanced Functional Materials >Mussel-Inspired Adhesive and Conductive Hydrogel with Long-Lasting Moisture and Extreme Temperature Tolerance
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Mussel-Inspired Adhesive and Conductive Hydrogel with Long-Lasting Moisture and Extreme Temperature Tolerance

机译：贻贝启发的胶粘剂和导电水凝胶，具有持久的水分和极高的耐温性

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摘要

Conductive hydrogels are a promising class of materials to design bioelectronics for new technological interfaces with human body, which are required to work for a long-term or under extreme environment. Traditional hydrogels are limited in short-term usage under room temperature, as it is difficult to retain water under cold or hot environment. Inspired by the antifreezing/antiheating behaviors from nature, and based on mussel chemistry, an adhesive and conductive hydrogel is developed with long-lasting moisture lock-in capability and extreme temperature tolerance, which is formed in a binary-solvent system composed of water and glycerol. Polydopamine (PDA)-decorated carbon nanotubes (CNTs) are incorporated into the hydrogel, which assign conductivity to the hydrogel and serve as nanoreinforcements to enhance the mechanical properties of the hydrogel. The catechol groups on PDA and viscous glycerol endow the hydrogel with high tissue adhesiveness. Particularly, the hydrogel is thermal tolerant to maintain all the properties under extreme wide tempreature spectrum (-20 or 60 degrees C) or stored for a long term. In summary, this mussel-inspired hydrogel is a promising material for self-adhesive bioelectronics to detect biosignals in cold or hot environments, and also as a dressing to protect skin from injuries related to frostbites or burns.
机译：导电水凝胶是一种有前途的材料，可用于设计与人体的新技术接口的生物电子学，需要长期或在极端环境下工作。传统的水凝胶在室温下短期使用受到限制，因为在寒冷或炎热的环境下难以保水。受自然界的防冻/防热行为启发，并基于贻贝化学，开发了具有持久的水分锁定能力和极高的温度耐受性的胶粘剂和导电水凝胶，它是由水和水组成的二元体系形成的。甘油。将聚多巴胺（PDA）装饰的碳纳米管（CNT）掺入到水凝胶中，该碳纳米管为水凝胶赋予导电性，并作为纳米增强剂来增强水凝胶的机械性能。 PDA和粘性甘油上的儿茶酚基团使水凝胶具有很高的组织粘附性。特别是，水凝胶具有耐热性，可以在极宽的温度范围（-20或60摄氏度）下保持所有特性，或者可以长期保存。总之，这种以贻贝为灵感的水凝胶是用于自粘生物电子学的有前途的材料，可在寒冷或炎热的环境中检测生物信号，也可作为敷料保护皮肤免受冻伤或灼伤的伤害。

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  • 来源
    《Advanced Functional Materials》 |2018年第3期|1704195.1-1704195.12|共12页
  • 作者

    Han Lu; Liu Kezhi; Wang Menghao; Wang Kefeng; Fang Liming; Chen Haiting; Zhou Jie; Lu Xiong;

  • 作者单位

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China;

    Sichuan Univ, Natl Engn Res Ctr Biomat, Genome Res Ctr Biomat, Chengdu 610064, Sichuan, Peoples R China;

    South China Univ Technol, Sch Mat Sci & Engn, Dept Polymer Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China;

    South China Univ Technol, Sch Mat Sci & Engn, Dept Polymer Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China;

    Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    antifreezing and antiheating; carbon nanotubes; conductive hydrogel; long-lasting moisture; mussel adhesion;

    机译：防冻防热;碳纳米管;导电水凝胶;持久保湿;贻贝附着力;

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