| 초록 |
A polyaspartamide derivative containing both hydroxyl and amine pendant, PHEA-EDA, was prepared from polysuccinimide via a controlled ring-opening aminolysis reaction using ethanolamine(EA) and ethylenediamine(EDA). Upon mixing tannic acid (TA) with PHEA-EDA in aqueous solution, viscous complex gel or precipitates was resulted, where the complexation behavior is influenced by the composition, pH, and temperature. TA, a plant-derived polyphenolic compound, can function not only as a gelator via strong non-covalent interaction but an effective adhesion promoter. The adhesive performance of the complex gels in varying conditions, obtained by lap shear test upon glass and acrylic plastic as the substrate, was discussed together with the antimicrobial property. Strong and multiple hydrogen-bonding interactions between TA and biocompatible polyaspartamides seem to be responsible for producing these complex gels, which are potentially useful as a novel biomedical soft adhesive. |
