期刊
出版社
ELSEVIER
DOI: 10.1016/j.msec.2019.110553
关键词
Self-healing hydrogels; Polydopamine; Atom transfer radical polymerization; Multi-walled carbon nanotubes
资金
- National Natural Science Foundation of China [51773086, 51573075]
- Major Program of Shandong Province Natural Science Foundation [ZR2018ZC0946]
- Key Research and Development Program of Shandong Province [2019GGX102012]
- Project of Shandong Province Higher Educational Science [2019KJA011, J16LC20, J18KA080]
A green strategy by integrating surface-initiated metal-free photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) with mussel-inspired polydopamine (PDA) chemistry, was used to fabricate multiwalled carbon nanotubes (MWCNTs)/poly(4-vinylpyridine) (P4VP) nanocomposites. Self-healing nanocomposite hydrogels were facilely designed with these nanocomposites through dynamic supramolecular interactions. Using mussel-inspired PDA chemistry from MWCNTs, nanocomposites (MWCNTs@PDA-P4VP) were successfully prepared by metal-free PET-ATRP with MWCNTs@PDA-Br as an initiator, rhodamine B as photocatalyst, 4-vinylpyridine (4VP) as monomer, respectively. Importantly, the obtained nanocomposite hydrogels had high mechanical strength (2.9 MPa), prior fracture strain (633.8%) and excellent self-healing property (90.6%). These methodologies will provide opportunities for the design of eco-functional materials or flexible biosensors.
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