Writer：Hao Liang , Fang Xie, Wei Wu, Fuquan Guo, Biao Chen , Jie Xu

Journal：Journal of Materials Science,  ISSN: 0022-2461(print) 1573-4803(online),(DOI:10.1007/S10853-008-    2491-2）

Abstract：The miscibility and melting properties of binary crystalline blends of poly (ethylene 2, 6-naphthalate)/poly(trimethylene terephthalate) (PEN/PTT) have been investigated with differential scanning calorimetry(DSC). The glass transition and cold crystallization behaviors indicated that in PEN/PTT blends, there are two different amorphous phases and the PEN/PTT blends are immiscible in the amorphous state. The polymer–polymer interaction parameter, Х₁₂, calculated from equilibrium melting temperature depression of the PEN component was- 1.791 9 10^{- 5}(300℃), revealing miscibility of PEN/PTT blends in the melt state.