ISOTHERMAL AND NONISOTHERMAL MELT CRYSTALLIZATION KINETIC-BEHAVIOR OFPOLY(ARYL ETHER BIPHENYL ETHER KETONE KETONE) - PEDEKK

Isothermal and nonisothermal melt crystallization kinetics of a novel poly(aryl ether ketone), PEDEKK, were investigated by differential sca nning calorimetry. Several kinetic analyses were used to describe the crystallization behavior. The activation energies were determined as 4 25 and 176 KJ/mol for isothermal and nonisothermal crystallization, re spectively. The equilibrium melting point T-m(o) was estimated to be 4 44 degrees C by using the Hoffman-Weeks approach. The observed crystal lization characteristics of PEDEKK were compared with those of the oth er members of the poly(arpl ether ketone) family.