摘要
水凝胶因卓越的吸水性、生物相容性和可调的机械性能,在多个领域中展现出巨大的应用潜力。随着软机器人、柔性电子和生物黏合剂等领域的快速发展,对具有可控黏附强度水凝胶的需求日益增长。基于此,对可控黏附水凝胶的最新研究进展进行探讨,重点概述了光、热、电、pH和氧化还原反应等外部刺激响应性水凝胶的研究进展,还讨论了每种表征方法的优缺点及机理。介绍了设计可控黏附水凝胶的典型策略,即界面黏附和内聚力脱黏,其中界面可控黏附涉及化学、拓扑和力学相互作用,而内聚力脱黏则关注材料本身的强度智能调控。阐述了黏附强度的实验表征方法和计算机模拟技术,如搭接-剪切测试、探针拉伸测试和剥离测试等,这些方法有助于评估水凝胶的黏附性能。重点讨论了基于不同刺激响应性的可控黏附水凝胶的黏附性能,如光控制的可控黏附水凝胶,通过光诱导异构化和光引发的可逆交联等化学反应实现对黏附性能的调控;热控制的水凝胶,则利用相变材料及热响应性聚合物实现黏附性能的调控;电控制的可逆黏附水凝胶,通过电引发的化学反应调控黏附强度。此外,还探讨了基于其他原理如pH、氧化还原反应等设计的可控黏附水凝胶的研究进展。最后,对可控黏附水凝胶面临的挑战和未来机遇进行了展望,指出了实现高黏附强度且快速可控切换黏附附状态的水凝胶是未来研究的重点,同时也强调了对黏附强度精准调控的需求,以及将实验室研发成果转化为实际应用的重要性。可控黏附水凝胶研究进展的阐述,为未来可控黏附水凝胶的设计提供了指南,对推动相关领域的技术进步具有重要意义。
This review delves into the recent advances in controllable adhesion hydrogels,particularly their applications in the field of stimuli-responsive adhesives.Hydrogels exhibit immense potential across various domains due to their exceptional water absorption,biocompatibility,and tunable mechanical properties.With the rapid development of soft robotics,flexible electronics,and bio-adhesives,there is a growing demand for hydrogels with controllable adhesion strengths.This review outlines the research progress in external stimuli-responsive hydrogels,such as those responsive to light,heat,electricity,pH,and redox reactions,and discusses the merits and mechanisms of each approach.Initially,typical strategies for designing controllable adhesion hydrogels are introduced,encompassing two major pathways:interfacial adhesion and cohesion failure.Interfacial controllable adhesion involves chemical,topological,and mechanical interactions,while cohesion failure focuses on the intelligent regulation of the material's inherent strength.Subsequently,experimental characterization methods and computational simulation techniques for adhesion strength are presented,including lap shear testing,probe tensile testing,and peel testing,which aid in assessing the adhesive properties of hydrogels.Thereafter,the review emphasizes controllable adhesion hydrogels based on different stimuli-responsiveness,such as light-controlled hydrogels that regulate adhesion performance through photo-induced isomerization and reversible crosslinking via photochemical reactions;heat-controlled hydrogels utilize phase change materials and thermos-responsive polymers to modulate adhesion performance;and electrically controlled reversible adhesion hydrogels regulate adhesion strength through electro-triggered chemical reactions.Additionally,the review discusses the research progress of controllable adhesion hydrogels designed based on other principles,such as pH and redox reactions.Finally,the review contemplates the challenges and future opportunities for controllable adhesion hydrogels,highlighting the need for hydrogels that achieve high adhesion strength and rapidly controllable adhesion states as a focal point for future research.It also underscores the necessity for precise control of adhesion strength and the importance of translating laboratory developments into practical applications.This review provides a guide for the design of future controllable adhesion hydrogels and is significant for advancing technology in related fields.
作者
李晓斌
林树东
LI Xiaobin;LIN Shudong(Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou 510650,China;University of Chi-nese Academy of Sciences,Beijing 100049)
出处
《材料研究与应用》
2025年第4期631-646,共16页
Materials Research and Application
基金
2021年广东省自然科学基金面上项目(2021A1515012334)。
关键词
水凝胶
刺激响应性
可控
可逆
黏附
按需黏附
脱粘
智能
hydrogels
stimuli-responsive
controllable
reversible
adhesion
on-demand adhesion
debonding
smart
