| 초록 |
In recent years, preparation of hybrid organic-inorganic composite has attracted much attention because such hybrids may show controllable properties such as optical, electrical and mechanical behaviors by combining the properties of both organic polymer and inorganic compound. A homogeneous tetraethyl orthosilicate (TEOS) mixture was prepared using hydrochloric acid, sulfosuccinic acid (SSA) and TEOS. TEOS solution was dropped to PVA solution while stirring to homogeneous mixtures. The homogeneous solution was poured into a Petri dish. The membranes were allowed to dry in air at room temperature, and completely dried membranes were then peeled off. The dried membranes were heated in a thermostated oven at 120oC for 1hr. The PVA/SiO2/SSA hybrid film was obtained. To investigate the morphology of hybrid materials, fracture surfaces were investigated by FE-SEM. To investigate property of hybrid composites, TGA, DSC were used. Also, water swelling ratio and ion-exchange capacity were investigated. Crystallinity and IEC value of PVA/SiO2/SSA in the hybrids increased with increasing SSA content. |
