| 초록 |
Thermal properties, especially glass transition temperature (Tg) are the key parameter for determining interfacial interactions between polymer thin films and substrate. In this study, we investigated the inter-relationship between the interfacial interactions of substrate/polymer layer arising from grafted polymer layers and the Tg of thin polymer films with the same chemical identity. To control the interfacial interaction between substrate and polymer, the chain length and grafting density of hydroxyl-terminated polystyrene (PS-OH) were controlled. The Tg of polymer thin films was measured by in-situ ellipsometric instrument as a function of film thickness. |
