A Multitasking Hydrogel Based on Double Dynamic Network with Quadruple‐Stimuli Sensitiveness, Autonomic Self‐Healing Property, and Biomimetic Adhesion Ability. Issue 15 (14th June 2017)

• Record Type: Journal Article
• Authors: Chen, Jiakai; Su, Qian; Guo, Ruiwei; Zhang, Jinwei; Dong, Anjie; Lin, Cunguo; Zhang, Jianhua
• Is Part Of: Macromolecular chemistry and physics. Volume 218:Issue 15(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-06-14
• Subjects: biomimetic adhesion -- crosslinker -- dynamic covalent bonds -- multiresponsive hydrogels -- self‐healing; Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201700166
• Languages: English
• ISSNs: 1022-1352

Abstract

Abstract : Multiresponsive hydrogels demonstrate great promise for multifarious applications. However, their preparations often require multistep and complex synthetic procedures. Herein, by constructing double dynamic network using inexpensive commercial materials, a multitasking hydrogel with temperature, pH, glucose, and redox quadruple‐stimuli sensitiveness, autonomic self‐healing property, and biomimetic adhesion ability is readily obtained, providing a cost‐effective and easy‐to‐implement approach to fabricate multifunctional hydrogels. Abstract : Multifunctional and multiresponsive hydrogels demonstrate excellent promise for multifarious applications but often suffer from high synthesis complexity and poor resource availability. Herein, based on the boronate–catechol interactions between a disulfide‐containing, boronic acid‐based crosslinker, and a catechol‐functionalized poly( N ‐isopropyl acrylamide), a multitasking hydrogel with double dynamic network is developed. By integrating the inherent heat‐responsive property of poly( N ‐isopropyl acrylamide) and bioadhesion of catechol moieties with the reversibility and dynamic features of boronate ester and disulfide bonds, the final hydrogel is endowed with not only temperature, pH, glucose, and redox quadruple‐stimuli sensitiveness, but also autonomic self‐healing property and biomimetic adhesion ability. Moreover, the rheological and adhesive properties can be readily tuned by adjusting the amount of crosslinker or the catechol in polymer precursor. Considering the readily prepared starting materials, easy preparation, high flexibility in tuning hydrogel properties, the procedure provided here opens up a promising avenue to develop multifunctional hydrogels for multifarious applications.