| 초록 |
In current, organic-inorganic hybrid coating on polymer substrate film has been attempted to improve the barrier property due to inorganic silicate network and to provide various surface characteristics like abrasion resistance, antistatic, antiadhesive, and antifogging properties through chemical functionalization of coating materials. In this study, the incorporation of ethylene-vinyl alcohol copolymer(EVOH) as the organic component into silica network was attempted via sol-gel method to prepare organic-inorganic hybrid nanocomposites with high barrier property. 3-isocyanatopropyltriethoxysilane (IPTES) as the coupling agent was employed during sol-gel process to obtain transparent hybrid gels with controled phase morphology by enhancing interfacial adhesion between organic and inorganic phases via strong chemical bonds. The microstructure of the hybrid silica/EVOH materials prepared by sol-gel method was investigated for the various IPTES contents. It was confirmed that there existed an optimum level of silane coupling agent(IPTES) content to obtain organic-inorganic hybrid nanocomposites with improved phase morphology and transparency. |
