Muscle-like Ultratough Hybrid Hydrogel Constructed by Heterogeneous Inorganic Polymerization on an Organic Network

• DOI: 10.1021/acsami.0c18242
• Publication Date: 2020-11-17T20:01:59Z
• Authors: Yadong Yu; Kangren Kong; Zhao Mu; Yueqi Zhao; Zhaoming Liu; Ruikang Tang
• Keywords: Polyvinyl Alcohol

Inspired by inorganic oligomers and their polymerization, we herein develop a heterogeneous polymerization tactic that can be used to prepare muscle-like hybrid hydrogel inducing the of calcium phosphate (CPO) onto polyvinyl alcohol (PVA) molecular chain network. In this process, CPO units bond with PVA molecules via assistance from sodium alginate (SA), then gradually polymerize along organic chains form ultrafine hydroxyapatite nanolines diameter ∼1 nm. Because well integration phases hierarchical structured exhibit ultratough mechanical properties ∼17.84 MPa in strength ∼8.97 kJ m-2 fracture energy, which exceed natural muscles almost synthetic hydrogels. Moreover, damaged repaired readily adding precursors CPO, PVA, SA, induce situ re-polymerization. The also exhibits rotational motion under aqueous conditions, developed into water-driven biomimetic motor. This study indicates achieve novel organic-inorganic rather than conventional composition, it provides for design manufacture advanced materials.