| 초록 |
Development of the advanced materials from the combination of macromolecules with inorganic species has attracted much attention. Chitosan is one of the most attractive macromolecules because of their unique properties such as hydrophilic and adsorption properties. However, their disadvantages (low mechanical and thermal properties) restrict the practical applications. Thus, many researchers have tried to enhance the characteristics either by cross-linking of chitosan with functionalized polymer such as epoxy, methacryl and isocyanate groups. In this study, the chitosan-oligosiloxane hybrid materials (chitosan hybrimer) were fabricated by cross-linking chitosan chain with the functionalized oligosiloxane which was synthesized by simple sol-gel reaction between functionalized alkoxysilanes. Amine group of the chitosan is chemically bonded with functional groups of the oligosiloxane for cross-linking of the chitosan chains. The fabricated chitosan hybrimer consists of siloxane nano clusters distribution in the chitosan networks. Through the control of the portion of the inorganic networks and organic functional groups could be improved the properties of the chitosan. Chitosan hybrimer showed higher thermal stability, and improved mechanical and swelling characteristics to be applied practically in various fields. |
