By combining the Avrami and Ozawa equations

a new kinetic equation for describing the non-isothermal crystallization process of polymers was obtained The comparison among the new method and other commonly used methods such as Jeziony and Ozawa methods was conducted with the syndiotactic 1

2-polybutadiene(st-1

2 PB) as an example The results suggested that the apparent Avrami exponent obtained by the Jeziony method can not predict the mechanism of non-isothermal crystallization of st-1

2 PB．The Ozawa method is also limited in obtaining the reliable kinetic parameters because of the substantial curvatures in the Ozawa plots．However

the analysis based on the new method gives a series of straight lines．According to the relationship among the new parameter a

the apparent Avrami exponent n．and the Ozawa exponent m in the new method

the mechanism of crystallization of st-1

2 PB can be predicated and the result is comparable with that obtained by the isothermal．crystallization．The new method is an effective method for dealing with the kinetics of non-isothermal crystallization of many polymeric systems

such as PEAKs

polyamides

polyolefins

poly(3-alkylthiophenes)

poly(β-hydroxybutyrate) and some blending systems.