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- Title
Synthesis of new ionic crosslinked polymer hydrogel combining polystyrene and poly(4‐vinyl pyridine) and its self‐healing through a reshuffling reaction of the trithiocarbonate moiety under irradiation of ultraviolet light.
- Authors
Dong, Peng; Cui, Kun; Xu, Fang; Jiang, Tao; Ma, Zhi
- Abstract
Abstract: A new ionic crosslinked polymer hydrogel was achieved by the strategy of ionically crosslinking α,ω‐dibromide terminated polystyrene (Br‐PS‐Br) with poly(4‐vinyl pyridine) (P4VP) which was synthesized by reversible addition‐fragmentation chain transfer polymerization using a chain transfer agent containing a trithiocarbonate moiety. The moiety of trithiocarbonate was introduced into the crosslinked network to show the self‐healing characteristics. The chain structure and components of Br‐PS‐Br and P4VP were characterized through 1H NMR, gel permeation chromatography, Fourier transform IR spectroscopy and elemental analysis. The P4VP (Mn = 25 300 g mol−1) chains were crosslinked with Br‐PS‐Br (Mn = 2000 g mol−1) through the quaternization reaction to form a polymer network which was further crosslinked in acetonitrile by irradiation of UV light to fabricate a hydrogel. Such a hydrogel of P4VP/Br‐PS‐Br cut by a razor blade can be rapidly (1 h) and repeatedly (three times) healed through a reshuffling reaction of the trithiocarbonate moiety under irradiation by UV light. © 2018 Society of Chemical Industry
- Subjects
CROSSLINKED polymers; HYDROGELS; POLYSTYRENE; POLYPYRIDINES; CARBONATES; ULTRAVIOLET radiation
- Publication
Polymer International, 2018, Vol 67, Issue 7, p868
- ISSN
0959-8103
- Publication type
Article
- DOI
10.1002/pi.5571