Spontaneous Macrophase Separation Strategy for Bridging Hydrogels from Bilayer to Double-Network Structure,Accounts of Materials Research

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Spontaneous Macrophase Separation Strategy for Bridging Hydrogels from Bilayer to Double-Network Structure
Accounts of Materials Research ( IF 14.0 ) Pub Date : 2024-09-04 , DOI: 10.1021/accountsmr.4c00209
Dong Zhang ₁ , Qiang Chen ₂ , Hong Chen ₃ , Yijing Tang ₄ , Jie Zheng ₄

Affiliation

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.

中文翻译：

将水凝胶从双层结构桥接到双网络结构的自发宏相分离策略

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，每一种都以其独特的网络结构、设计原理、合成方法和针对其特定应用的核心功能而著称。双层水凝胶的结构分为两个不同的层，每个层都有其各向异性结构和独特的特性。这种双层配置有助于响应环境刺激的针对性响应或受控驱动，使其成为需要响应式材料行为的应用的理想选择。另一方面，DN 水凝胶由两个交织但独立的网络组成：一个是脆性的，另一个是弹性的。这种双网络结构具有对比鲜明的网络特性，可实现大量的能量耗散和机械增强，通常远远超过传统的单网络水凝胶。尽管每种水凝胶类型都有各自的优势和特殊应用，但由于它们固有的结构差异，针对这两种水凝胶的统一制造策略显然缺失。水凝胶领域的这一差距带来了重大挑战，但也为材料设计和应用的创新提供了机会。

更新日期：2024-09-04

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