木质仿生智能响应材料的研究进展

智能响应材料需具备3个基本要素,即感知、驱动和控制,在全球新材料研究领域中,仿生智能响应材料是目前世界各国技术战略发展中的竞争热点。木材是一种天然且可再生的生物质材料,具有良好的结构和功能特性。作为人类使用最早的材料,木材具有轻质、美观、生物调节等优良特性,是绿色环境人体健康的贡献者。木材的纤维素、半纤维素和木质素构成了木材精妙的微结构同时提供了许多官能团,为木材仿生智能材料的合成奠定了优良的基础。本文简要介绍了木质仿生智能响应材料的研究进展,综述了pH值、气体、光、机械力、湿度、温度和双重/多重刺激响应木质材料的制备、性能与潜在应用;重点介绍并总结了以木质材料为基材的仿生智能响应材料的发展现状。

Research progress of wood materials with stimuli-responsive properties

Intelligent responsive materials have three basic elements:perception,actuation and control,bio-inspired intelligent responsive materials have become one of the most exciting fields in the research of new materials.Wood is the oldest material used by human beings for construction after stone.As a natural and renewable biopolymer,wood has been extensively used in buildings,decorations,industries and other daily lives in virtue of its unique performances of the high ratio of strength to weight,esthetic,and amendment for indoor environment.It is commonly known that wood has three major components which are cellulose,hemicellulose,and lignin.The network of the components and the space of parallel hollow tubes construct the multi-scale porous structure,which offers the penetrability,accessibility and reactivity of wood materials.As a result,the unique composition and subtle hierarchical structures of wood lay the foundation for their further functionalization.In this paper,the research progress of wood materials with stimuli-responsive properties was introduced;the preparation,properties and potential applications of wood materials in responses to pH,gas,light,mechanical forces,humidity,temperature and double/multiple stimuli were detailed explained.This article focuses on the development of bio-inspired intelligent responsive materials based on wood materials.