Journal of Applied Polymer Science · 1989 · 47 citations · 22 references
Natural SciencesMaterials EngineeringMaterials SciencePhysical ChemistryPolymer ChemistryPolymer MaterialsPolymer BlendsPolymer CharacterizationPolymer CrystallizationPolymer Phase BehaviorPolymer Physical ChemistryPolymer PhysicsBlend CompatibilityCrystallization BehaviorCrystallization In BlendsCrystallization KineticsPolyamidePolycarbonatePolymer Crystallization KineticsThermal Properties
Abstract Blends of polyamide 6 (PA6) and polycarbonate (PC) have been investigated, over a full range of composition, to check interactions between them. SEM observations show that the mixtures are characterized by domains of clearly segregated homophases and voids between the two polymers. DSC and DMTA data indicate the presence of two T g ' s, corresponding to two separate phases, with the T g of the PC phase decreasing on increasing the PA6 amount. Moreover, the crystallization kinetics of PA6 is slightly showed down by the PC. Chemical reactions between the two polymers are supposed to give rise to low molar mass compounds, as shown by GPC; these species plasticize the PC and partially dissolve into the molten polyamide, causing decrease of PC T g and reduction of overall crystallization rate of PA6. Apparent influence of PC on melting temperature and enthalpy of PA6 is also discussed.
22
Kinetics of Phase Change. I General Theory
Melvin Avrami · The Journal of Chemical Physics · 1939 · 11.2K citations