High‐Strength, Rapidly Self‐Recoverable, and Antifatigue Nano‐SiO2/Poly(Acrylamide–Lauryl Methacrylate) Composite Hydrogels. Issue 8 (25th June 2019)

• Record Type: Journal Article
• Authors: Pan, Shenxin; Xia, Meng; Fang, Zhengping; Fu, Jing; Wu, Yuting; Sun, Zhengguang; Zhang, Yuhong; He, Peixin
• Is Part Of: Macromolecular materials and engineering. Volume 304:Issue 8(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-06-25
• Subjects: composite hydrogels -- fatigue‐resistant ability -- hydrophobic association poly(acrylamide–lauryl methacrylate) -- nanosilica sol -- rapid self‐recovery behavior; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/mame.201900130
• Languages: English
• ISSNs: 1438-7492

Abstract

Abstract: Creating load‐bearing hydrogels with superior mechanical strength and toughness is of vital importance for promoting the development of polymer hydrogels toward practical applications. Herein, a type of composite hydrogel is facilely fabricated employing simple and effective UV irradiation one‐pot method by introducing cheap and available nanosilica sol into hydrophobic association poly(acrylamide–lauryl methacrylate) (HAPAM gels). Composite hydrogels exhibit enhanced mechanical strength (compression stress reaching 4.4 MPa) and toughness (compression hysteresis energy achieved is 151.15 kJ m −3 ) compared to HAPAM gels. Composite hydrogels also demonstrate rapid self‐recovery behavior (95.91% stress recovery and 92.19% hysteresis energy recovery after restoration for 15 min, respectively) and favorable fatigue‐resistant ability without the help of external stimuli at room temperature based on the cyclic loading–unloading compression measurements. The simple and effective design strategy may help the development of hydrogel materials toward practical applications for soft sensors, tissue engineering, and actuators. Abstract : A type of composite hydrogel is fabricated by introducing cheap and available nanosilica sol into hydrophobic association poly(acrylamide–lauryl methacrylate) (HAPAM gels) . Composite hydrogels exhibit enhanced mechanical strength and toughness compared to HAPAM gels. Composite hydrogels also demonstrate rapid self‐recovery behavior and favorable fatigue‐resistant ability without the help of external stimuli.