Effect of partial melting on the crystallization kinetics of nylon-1212

Authors

  • Jianbin Song,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Qingyong Chen,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Minqiao Ren,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Xiaohong Sun,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Huiliang Zhang,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Hongfang Zhang,

    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author
  • Zhishen Mo

    Corresponding author
    1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    • State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Graduate School of Chinese Academy of Science, Changchun 130022, China
    Search for more papers by this author

Abstract

The isothermal and nonisothermal crystallization kinetics of partially melted nylon-1212 was investigated with differential scanning calorimetry. Because of partial melting, the pre-existing crystals changed the crystallization mechanism and had a strong effect on the crystallization process. The Avrami exponent and interfacial free energy of the chain-folded surface of partially melted nylon-1212 were higher than those of completely melted nylon-1212. The work of chain folding was determined to be 5.9 kcal/mol. The activation energy of the isothermal crystallization process was determined to be 399.1 kJ/mol, far higher than that of complete melting. The crystallization rate coefficient and Jeziorny analysis indicated that the ability of nonisothermal crystallization for partially melted nylon-1212 was enhanced. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 3222–3230, 2005

Ancillary