Cellulose membranes as moisture-driven actuators with predetermined deformations and high load uptake

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY International Journal of Smart and Nano Materials Pub Date : 2021-04-03 DOI:10.1080/19475411.2021.1906780

X. Jiang, Bingkun Tian, Xiaoyu Xuan, Wanqi Zhou, Jianxin Zhou, Yaqing Chen, Yang Lu, Zhuhua Zhang

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引用次数: 6

Abstract

ABSTRACT We report the synthesis of cellulose membranes from balsa wood with an exceptionally high responsivity to humidity change by chemical processing and mechanical compression. By varying the ambient humidity, the produced cellulose membranes can provide a variety of predetermined deformations, such as curve, s-like deformation and curl. The high humidity responsivity is originated from a self-maintained moisture gradient induced by an asymmetrical design of membrane surfaces, aided by the hygroscopic swelling of the cellulose. The moisture-driven actuators are then demonstrated as a three-finger gripper that can grab, hold and release objects 40 times the weight of its own. The combination of natural wood and stimuli-responsive behavior open a way to designing smart structures, actuators and soft robots with environmentally friendly, recyclable and biocompatible materials. Graphical abstract

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纤维素膜作为具有预定变形和高负荷摄取的水分驱动致动器

摘要我们报道了用轻木通过化学处理和机械压缩合成对湿度变化具有极高响应性的纤维素膜。通过改变环境湿度，所生产的纤维素膜可以提供各种预定的变形，例如弯曲、s形变形和卷曲。高湿度响应性源于膜表面的不对称设计引起的自保持湿度梯度，这得益于纤维素的吸湿膨胀。然后，湿气驱动的致动器被演示为一个三指夹持器，它可以抓取、保持和释放40倍于自身重量的物体。天然木材和刺激响应行为的结合为用环保、可回收和生物相容的材料设计智能结构、致动器和软机器人开辟了一条道路。图形摘要

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.