Premium
Nanoclay Reinforced Self‐Cross‐Linking Poly( N ‐Hydroxyethyl Acrylamide) Hydrogels with Integrated High Performances
Author(s) -
Yu Xianqiang,
Li Yu,
Yang Jia,
Chen Feng,
Tang Ziqing,
Zhu Lin,
Qin Gang,
Dai Yahui,
Chen Qiang
Publication year - 2018
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201800295
Subject(s) - materials science , self healing hydrogels , toughness , ultimate tensile strength , self healing , composite material , acrylamide , polymer , nanocomposite , fabrication , monomer , polymer chemistry , medicine , alternative medicine , pathology
Despite recent significant progress in fabricating tough hydrogels, it is still a challenge to realize high strength, large stretchability, high toughness, rapid recoverability, and good self‐healing simultaneously in a single hydrogel. Herein, Laponite reinforced self‐cross‐linking poly( N ‐hydroxyethyl acrylamide) (PHEAA) hydrogels (i.e., PHEAA/Laponite nanocomposite [NC] gels) with dual physically cross‐linked network structures, where PHEAA chains can be self‐cross‐linked by themselves and also cross‐linked by Laponite nanoplatelets, demonstrate integrated high performances. At optimal conditions, PHEAA/Laponite NC gels exhibit high tensile strength of 1.31 MPa, ultrahigh tensile strain of 52.23 mm mm −1 , high toughness of 2238 J m −2 , rapid self‐recoverability (toughness recovery of 79% and stiffness recovery of 74% at room temperature for 2 min recovery without any external stimuli), and good self‐healing properties (strain healing efficiency of 42%). The work provides a promising and simple strategy for the fabrication of dual physically cross‐linked NC gels with integrated high performances, and helps to expand the fundamentals and applications of NC gels.