| 초록 |
The thermal behavior properties (especially glass transition) are the key parameters for determining the mechanical properties of polymer system. In this study, we investigated the inter-relationship between the interfacial interactions arising from grafted polymer layers and the glass transition behavior (Tg) of thin polymer films with same chemical identity. To control the interfacial interaction between substrate and polymer, we changed molecular weight and grafting time of hydroxyl-terminated polystyrene (HO-PS) to control grafting density of PS brushes. For polymer chains on the brushes of the same chemical identity with high density, the autophobic dewetting behavior can be attributed to the entropic effects of the polymer and the grafted polymer chains. |
