| 초록 |
The modified double-lattice model (mDLM), which is proposed by Oh et al. for polymer solution systems, is extended to polymer blend systems.In mDLM, C-gamma was used as a universal constant to correct higher order interaction energy terms.In this study, we introduce C-gamma as a new universal function of interaction energy to reduce the mathematical defects originated from the truncation of higher order interaction energy terms.We correlate C-gamma with Ryu et al.’s simulation data for symmetric polymer blend with various chain lengths ( r-1= r-2 = 8, 20, 50, 100).In addition, oriented interactions between polymer segments are considered based on the secondary lattice concept.The proposed model shows a slight discrepancy when compared with experimental data. |
