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首页> 外文期刊>Advanced Functional Materials >Printing Hydrogels and Elastomers in Arbitrary Sequence with Strong Adhesion
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Printing Hydrogels and Elastomers in Arbitrary Sequence with Strong Adhesion

机译：具有强附着力的任意顺序印刷水凝胶和弹性体

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摘要

Many recently demonstrated devices require the integration of hydrogels and hydrophobic elastomers. Extrusion print is a promising method for rapid prototyping but existing approaches do not fulfill a basic requirement: print integrated structures of a hydrogel and an elastomer, in arbitrary sequence, with strong adhesion. This paper demonstrates an approach to fulfill this requirement. During print, the ink of each material flows through a nozzle under a pressure gradient but retains the shape against gravity and capillarity. During cure, covalent bonds form to link monomer units into polymer chains, crosslink the polymer chains into the polymer networks of the hydrogel and the elastomer, as well as interlink the two polymer networks into an integrated structure. The approach covalently interlinks the hydrogel network and the elastomer network by adding an interlink initiator in one of the inks. An adhesion energy above 5000 J m(-2) is demonstrated. Printed morphing structures survive swelling and printed artificial axons survive repeated hits of a hammer. This approach opens a road to the development of soft devices for broad applications in medicine and engineering.
机译：最近证明的许多设备都要求将水凝胶和疏水性弹性体整合在一起。挤出印刷是用于快速成型的有前途的方法，但是现有方法不能满足基本要求：以任意顺序印刷具有强附着力的水凝胶和弹性体的集成结构。本文演示了一种满足此要求的方法。在打印过程中，每种材料的墨水都在压力梯度下流过喷嘴，但保持了抗重力和毛细作用的形状。在固化过程中，形成共价键以将单体单元连接到聚合物链中，将聚合物链交联到水凝胶和弹性体的聚合物网络中，以及将两个聚合物网络互连到一个整体结构中。该方法通过在一种油墨中添加交联引发剂来共价交联水凝胶网络和弹性体网络。证明了超过5000 J m（-2）的粘附能。印刷的变形结构可以承受膨胀，印刷的人造轴突可以承受锤子的反复撞击。这种方法为在医学和工程领域广泛应用的软设备开发开辟了道路。

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  • 来源
    《Advanced Functional Materials》 |2019年第27期|1901721.1-1901721.8|共8页
  • 作者

    Yang Hang; Li Chenghai; Yang Meng; Pan Yudong; Yin Qianfeng; Tang Jingda; Qi Hang Jerry; Suo Zhigang;

  • 作者单位

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Dept Engn Mech, State Key Lab Strength & Vibrat Mech Struct, Int Ctr Appl Mech, Xian 710049, Shaanxi, Peoples R China;

    Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA;

    Harvard Univ, Kavli Inst Bionano Sci & Technol, Sch Engn & Appl Sci, Cambridge, MA 02138 USA;

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

    3D printing; hydrogel-elastomer hybrids; soft devices; strong adhesion;

    机译：3D打印;水凝胶-弹性体混合物;软设备;强附着力;

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