| 초록 |
Carboxymethyl cellulose(CMC) is a highly water-soluble anionic polysaccharide widely used in pharmaceuticals, as an emulsifying agent, and in cosmetics. Starch is widely used in different fields such as food, environmental-friendly plastics, and medicine due to its low cost, biodegradability, and renewability. In this study, hydrogels were prepared by chemical reaction of CMC/starch aldehyde blends with crosslinker. Prior to the reaction, starch was oxidized by sodium periodate. By this process, The hydroxyl groups, primarily at C-2, C-3, and C-6 positions, were transformed to aldehyde groups. The polysaccharide blends were crosslinked by epichlorohydrin(ECH) or citric acid. The structure of the hydrogel was established using FT-IR spectroscopy. Scanning electron microscopy was also carried out to study the surface morphology of the hydrogel. Finally, the effects on swelling behavior of the hydrogel by crosslinker variations were studied. |
