Nonisothermal crystallization behavior of nylon 6

nylon 1212 and their blends using maleared SEBS as eompatibilizers were studied by differential scanning ealofimetry (DSC)．The results showed that the processing history had a great influence on the crystallization and melt behavior of nylons．The extruded nylons showed improved crystallization temperature(Tc) and multiple melting phenomena due to the stress induced molecular orientation．In blends

the heterogeneous crystallization of nylon 1212 on the interface of nylon 1212 and nylon 6 occurred．Therefore

the Tc of nylon 1212 was increased．With the addition of maleated SEBS

the forrnation of grafted copolymers between nylon 1212 and maleated SEBS restrained the movement of molecules and decreased the Tc of nylon 1212．The melt temperature (Tm) of nylon 1212 was declined and the upper melting peak disappeared with increase of maleated SEBS in blends．However

the melt behavior of nylon 6 in blends was nearly unchanged．