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- Title
Tetra‐PEG‐Based Nano‐Enhanced Hydrogel with Excellent Mechanical Properties and Multi‐Functions.
- Authors
Wang, Lina; Lei, Kun; Li, Zhao; Wang, Xinling; Xiao, Haijun; Zheng, Zhen
- Abstract
Further improving mechanical performances of the tetra‐PEG hydrogel and simultaneously endowing it with functionalities remains a challenge. Herein, rGO is introduced into the tetra‐PEG network to construct a tetra‐PEG/rGO nanocomposite (NC) hydrogel with improved mechanical performances and functionalities. The hydrogel is prepared by in situ simultaneous polymerization of clickable tetra‐PEG macromonomers (TAPEG and TPPEG) and reduction of GO in one pot. The amount of rGO introduced into the hydrogel network is determined and can be controlled through tuning the feed ratio of the GO to the macromonomers. The tetra‐PEG/rGO NC hydrogel displays drastically improved mechanical performances including tensile properties, compressive properties, and fatigue resistance compared to the pristine clickable tetra‐PEG hydrogel. SEM, FT‐IR, and loading–unloading experiments indicate that interactions between rGO sheets and tetra‐PEG segments contribute to the mechanical improvement. Furthermore, the tetra‐PEG/rGO NC hydrogel exhibits selective dye adsorption ability and near‐infrared light responsiveness. The tetra‐PEG/rGO NC hydrogel with excellent mechanical performances and functionalities is highly promising in many areas such as dye absorption, remote light‐controlled devices, and tissue engineering. In this work, a novel tetra‐PEG/rGO nanocomposite hydrogel is prepared through simultaneously gelating and reducing GO suspensions containing clickable tetra‐PEG macromonomers in one pot. Herein, the introduction of rGO into the tetra‐PEG network endows the tetra‐PEG/rGO nanocomposite hydrogel with improved mechanical performances and functionalities (selective dye adsorption ability and near‐infrared light responsiveness).
- Subjects
HYDROGELS; NANOCOMPOSITE materials; POLYMERIZATION; MACROMONOMERS; SCANNING electron microscopy
- Publication
Macromolecular Materials & Engineering, 2018, Vol 303, Issue 11, pN.PAG
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201800325