NDLI: Redox- and pH-responsive polymer gels with reversible sol–gel transitions and self-healing properties

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Redox- and pH-responsive polymer gels with reversible sol–gel transitions and self-healing properties

Content Provider	Semantic Scholar
Author	Zhang, Ping Deng, Fengyang Peng, Ya Chen, Hongbiao Gao, Yong Yi Li, Huaming
Copyright Year	2014
Abstract	Covalent dynamic gels based on reversible acylhydrazone and disulfide bonds were prepared by crosslinking of benzhydrazide-containing poly(triazole) (PTB) with a novel disulfide-containing dialdehyde (C2) in DMF at ambient temperature. The PTB was synthesized by the metal- and solvent-free click polymerization of diazide and dialkyne monomers followed by treatment with hydrazine hydrate. The as-fabricated polymer gels exhibited both redox and pH stimuli-responsive behaviours. Analysis of the composition-property relationships of these polymer gels, specifically considering the effects of catalysts, molar ratio of benzhydrazide to aldehyde groups (–NH2/–CHO), and gelator concentrations on rheological properties, were performed. Additionally, the gel revealed interesting self-healing properties through acylhydrazone exchange and/or disulfide exchange reactions. Employing this dynamic character, it is possible to regenerate the used gel, and thus it has the potential to perform in a range of dynamic or bioresponsive applications.
Starting Page	47361
Ending Page	47367
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1039/C4RA08189G
Alternate Webpage(s)	https://pubs.rsc.org/en/content/getauthorversionpdf/C4RA08189G
Alternate Webpage(s)	https://doi.org/10.1039/C4RA08189G
Volume Number	4
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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