Stimuli-sensitive complexation and the strongly adhesive antibacterial gel from biocompatible PolyAspAm(EA/EDA) and tannic acid

A polyaspartamide containing both hydroxyl and amine pendants, PolyAspAm(EA/EDA), was prepared. Upon mixing PolyAspAm(EA/EDA) with tannic acid (TA) in an aqueous solution, a viscous complex gel or precipitates are formed, where the complexation behavior is influenced by composition, pH, and temperat...

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Bibliographic Details
Published in:International journal of polymeric materials 2022-04, Vol.71 (6), p.462-469
Main Authors: Nguyen, Huong Lan Ngoc, Kim, Ji-Heung
Format: Article
Language:English
Subjects:
Adhesive gel
Adhesives
antibacterial properties
Aqueous solutions
Biocompatibility
Complexation
Gels
Hydrogen bonding
polyaspartamide
Precipitates
reversible gelation
Stimuli
stimuli-responsive
Tannic acid
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Summary:A polyaspartamide containing both hydroxyl and amine pendants, PolyAspAm(EA/EDA), was prepared. Upon mixing PolyAspAm(EA/EDA) with tannic acid (TA) in an aqueous solution, a viscous complex gel or precipitates are formed, where the complexation behavior is influenced by composition, pH, and temperature. The reversible phase change depending on pH and temperature suggested that the complex gel formation be driven by physical bonding, mainly hydrogen bonding. TA, a plant-derived polyphenolic compound, was used as gelator and adhesion promoter. The adhesive and antibacterial properties of complex gels are discussed. This polyaspartamide/TA based physical gel has potential as a stimuli-responsive and biocompatible adhesive.
ISSN:0091-4037
1563-535X
DOI:10.1080/00914037.2020.1848830