Supramolecular Semi-convertible Hydrogel Enabled Self-Healing Responsive Lubrication Under Dynamic Shearing

Abstract

Open AccessCCS ChemistryRESEARCH ARTICLES4 Jan 2023Supramolecular Semi-Convertible Hydrogel Enabled Self-Healing Responsive Lubrication under Dynamic Shearing Xuewei Zhang, Kaiyao Shi, Xuhao Yang, Jian Wang, Huan Liu, Wenlong Song and Shutao Wang Xuewei Zhang Google Scholar More articles by this author , Kaiyao Shi Google Scholar More articles by this author , Xuhao Yang Google Scholar More articles by this author , Jian Wang Google Scholar More articles by this author , Huan Liu Google Scholar More articles by this author , Wenlong Song Google Scholar More articles by this author and Shutao Wang Google Scholar More articles by this author https://doi.org/10.31635/ccschem.023.202202670 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail The cartilage-inspired hydrogel has attracted great interests due to its tunable mechanic and low friction, however, it is incapable of self-healing under a complex dynamic shearing environment. In this work, a self-healing semi-convertible hydrogel is developed, which can recover the unique active lubricating function under shearing. Based on the cooperating strategy of noncovalent and covalent bonding, the prepared semi-convertible hydrogel composes of three interpenetrated networks including i) shear-responsive N-fluorenylmethoxycarbonyl-L-tryptophan supramolecular network, ii) self-healing polyhydroxyethyl acrylamide network and iii) rigid polyvinyl alcohol covalent network. The shear-responsive lubricating function and mechanical property can be self-healed under shearing environment through the noncovalent hydrogen bonding assembly of polyhydroxyethyl acrylamide associated by the π-π assembly of N-fluorenylmethoxycarbonyl-L-tryptophan. The as-developed semi-convertible hydrogel provides a self-healing model comparing with traditional self-healing lubricating materials through encapsulating lubricant microcapsules or infusing lubricants onto surfaces. We demonstrated a proof-of-concept on the self-healing lubrication of simplified artificial worn cartilage model under dynamic shearing condition. This study will offer a potential strategy on designing the self-healing soft devices under dynamic stimuli far beyond the lubricating materials. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentVolume 0Issue jaPage: 1-31Supporting Information Copyright & Permissions© 2023 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...