| 초록 |
Novel hydrogel was prepared from polyaspartamide derivative, PolyAspAm(API/APD) by using glutaraldehyde (GA). PolyAspAm(API/APD) with two kinds of pendent, i.e., 1,2-dihydroxy and imidazolyl propyl groups, was synthesized by successive ring-opening aminolysis reaction of polysuccinimide (anhydrous polyaspartic acid). The first network is established through covalent acetal bond between massive 1,2-hydroxyl groups of the polymer with GA. After that, the resulting gel is immersed into metal-ion (Fe+3, Al+3, Cu+2, Zn+2, etc.) aqueous solutions to induce second network via metal-coordination to provide mechanically robust dual-crosslinked hydrogel. The mechanical strength of the resulting gel depends on the chemical composition, the crosslinking degree, and water content. This novel kind of hydrogel is expected to have potential applications in heavy metal-ion adsorption and recovery in water treatment, and also as adhesive hydrogel with antibacterial performance in biomedical field. |
