Isothermal and nonisothermal crystallization kinetics of even-odd nylon 10 11 were investigated by differential scanning calorimetry (DSC). Equilibrium melting point was determined to be 195.20 degrees C. Avarmi equation was adopted to describe isothermal and nonisothermal crystallization. A new relation suggested by Mo was used to analyze nonisothermal crystallization and gave a good result. The crystallization activation energies have been obtained to be - 583.75 and - 270.06 KJ/mol for isothermal and nonisothermal crystallization, respectively. (c) 2005 Wiley Periodicals, Inc.