自愈水凝胶
材料科学
3D打印
软机器人
纳米技术
生物相容性
韧性
软质材料
铸造
造型(装饰)
三维打印
组织工程
机械工程
计算机科学
复合材料
生物医学工程
工程类
人工智能
机器人
高分子化学
冶金
作者
Puskal Kunwar,Mark James Ransbottom,Pranav Soman
出处
期刊:3D printing and additive manufacturing
[Mary Ann Liebert]
日期:2022-10-01
卷期号:9 (5): 435-449
被引量:6
标识
DOI:10.1089/3dp.2020.0239
摘要
Hydrogels are widely used materials due to their biocompatibility, their ability to mimic the hydrated and porous extracellular microenvironment, as well as their ability to tune both mechanical and biochemical properties. However, most hydrogels lack mechanical toughness, and shaping them into complicated three-dimensional (3D) structures remains challenging. In the past decade, tough and stretchable double-network hydrogels (DN gels) were developed for tissue engineering, soft robotics, and applications that require a combination of high-energy dissipation and large deformations. Although DN gels were processed into simple shapes by using conventional casting and molding methods, new 3D printing methods have enabled the shaping of DN gels into structurally complex 3D geometries. This review will describe the state-of-art technologies for shaping tough and stretchable DN gels into custom geometries by using conventional molding and casting, extrusion, and optics-based 3D printing, as well as the key challenges and future outlook in this field.
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