Phase behavior of binary mixture systems of two crystallizable components.Semicrystalline polymers and wholly-crystalline substances

The phase behavior of binary mixture systems of two crystallizable componen ts including semicrystalline polymers and wholly-crystalline substances are investigated systematically. On the basis of the general melting temperatu re equation, the features of melting temperature diagram, i.e., higher and lower melting temperatures-composition relations are presented for three ca tegories of binary mixtures; (A) two wholly-crystalline substances, (B) a s emicrystalline polymer and a wholly-crystalline substance and (C) two semic rystalline polymers. Applications to two cases of binary mixtures are demon strated; first, in category B, mixtures of polyethylene and n-alkane (liter ature data of Mandelkern et al.), and second, in category C, mixtures of ny lon 6 and nylon 66 (our data in this series).