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Graphene/cyclodextrin-based nanocomposite hydrogel with enhanced strength and thermo-responsive ability.
- Source :
-
Carbohydrate Polymers . Oct2017, Vol. 174, p804-811. 8p. - Publication Year :
- 2017
-
Abstract
- Dual crosslinked system has been proved to be an efficient method to obtain tough and high strength hydrogels. Herein, we synthesized a novel graphene oxide/p(acrylamide- co -poly(ethylene glycol) methyl ether methacrylate)/α-cyclodextrin (GO/P(AM - co -PEGMA)/CD) physical dual crosslinked hydrogel via copolymerization of AM and PEGMA in the α-CD/GO solution. The polymer main chains adsorb onto the GO surface resulting in the first crosslinked system and multiple hydrogen bonds between α-CDs that thread on the PEGMA side chains establish the second crosslinked system. The GO/P(AM- co -PEGMA)/CD hydrogel exhibits favorable tensile properties with fracture strain of 1800% and high fracture stress of 660 kPa; in addition, the hydrogel can bear large compressive stress (2.7 MPa) at strain of 85% without rupture. Furthermore, physical dual crosslinked system endows the GO/P(AM- co -PEGMA)/CD hydrogel with thermoplastic ability and thermo-responsive shape memory behavior. This facial one-pot method will contribute to design and application of high performance hydrogel. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRAPHENE
*CYCLODEXTRINS
*HYDROGELS
*COPOLYMERIZATION
*HYDROGEN bonding
Subjects
Details
- Language :
- English
- ISSN :
- 01448617
- Volume :
- 174
- Database :
- Academic Search Index
- Journal :
- Carbohydrate Polymers
- Publication Type :
- Academic Journal
- Accession number :
- 124630572
- Full Text :
- https://doi.org/10.1016/j.carbpol.2017.06.081