将水凝胶从双层结构桥接为双网络结构的自发大相分离策略

IF 14 Q1 CHEMISTRY, MULTIDISCIPLINARY
Dong Zhang, Qiang Chen, Hong Chen, Yijing Tang, Jie Zheng
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引用次数: 0

摘要

双层水凝胶和双网络(DN)水凝胶代表了两类不同的软湿材料,它们各自具有独特的网络结构、设计原理、合成方法以及针对特定应用的核心功能。双层水凝胶由两个不同的层构成,每个层都具有各向异性的结构和独特的性能。这种双层结构有利于对环境刺激做出有针对性的反应或受控驱动,因此非常适合需要响应性材料行为的应用。另一方面,DN 水凝胶由两个相互交织但又相互独立的网络组成:一个是脆性网络,另一个是弹性网络。这种双网络结构具有截然不同的网络特性,可大量消散能量并增强机械性能,通常远远超过传统的单网络水凝胶。尽管每种水凝胶都有各自的优势和专业应用,但由于其固有的结构差异,针对这两种类型水凝胶的统一制造策略一直明显缺失。水凝胶领域的这一空白带来了巨大的挑战,但也为材料设计和应用的创新带来了机遇。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spontaneous Macrophase Separation Strategy for Bridging Hydrogels from Bilayer to Double-Network Structure
Bilayer hydrogels and double-network (DN) hydrogels represent two distinct classes of soft-wet materials, each characterized by their distinctive network structures, design principles, synthesis methods, and core functions targeted for their specific applications. Bilayer hydrogels are structured in two different layers, each with their anisotropic structure and unique properties. This dual-layer configuration facilitates targeted responses or controlled actuation in response to environmental stimuli, making them ideal for applications requiring responsive material behavior. On the other hand, DN hydrogels consist of two interwoven yet independent networks: one brittle and the other elastic. This dual-network structure, featuring contrasting network properties, allows for substantial energy dissipation and mechanical enhancement, often far exceeding that of traditional single-network hydrogels. Despite the individual strengths and specialized applications of each hydrogel type, a unified fabrication strategy that addresses both types of hydrogels has been conspicuously missing due to their inherent structural differences. This gap in the hydrogel field presents significant challenges but also opens opportunities for innovation in material design and application.
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来源期刊
CiteScore
17.70
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