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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
被引：17
|作者：
Dong, Peng
[1
,2
]
Cui, Kun
[1
]
Xu, Fang
[1
,2
]
Jiang, Tao
[2
]
Ma, Zhi
[1
]
机构：
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Synth & Self Assembly Chem Organ Funct Mo, Shanghai 200032, Peoples R China
[2] Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Tianjin, Peoples R China
基金：
中国国家自然科学基金;
关键词：
trithiocarbonate;
reversible addition-fragmentation chain transfer polymerization;
UV crosslinking;
ionic hydrogel;
self-healing;
SHAPE-MEMORY POLYMERS;
PI-PI STACKING;
COMPOSITES;
GELS;
DESIGN;
TEMPERATURE;
COMPLEXES;
NETWORKS;
PROPERTY;
STRENGTH;
D O I：
10.1002/pi.5571
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ;
080501 ;
081704 ;
摘要：
A new ionic crosslinked polymer hydrogel was achieved by the strategy of ionically crosslinking ,-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 H-1 NMR, gel permeation chromatography, Fourier transform IR spectroscopy and elemental analysis. The P4VP (M-n=25300gmol(-1)) chains were crosslinked with Br-PS-Br (M-n=2000gmol(-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 (1h) and repeatedly (three times) healed through a reshuffling reaction of the trithiocarbonate moiety under irradiation by UV light. (c) 2018 Society of Chemical Industry
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页码：868 / 873
页数：6
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