Title of article :
Melting behaviors, isothermal and non-isothermal crystallization kinetics of nylon 1212
Author/Authors :
Liu، نويسنده , , Minying and Zhao، نويسنده , , Qingxiang and Wang، نويسنده , , Yudong and Zhang، نويسنده , , Chenggui and Mo، نويسنده , , Zhishen and Cao، نويسنده , , Shaokui، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2003
Pages :
9
From page :
2537
To page :
2545
Abstract :
Isothermal crystallization, subsequent melting behavior and non-isothermal crystallization of nylon 1212 samples have been investigated in the temperature range of 160–171 °C using a differential scanning calorimeter (DSC). Subsequent DSC scans of isothermally crystallized samples exhibited three melting endotherms. The commonly used Avrami equation and that modified by Jeziorny were used, respectively, to fit the primary stage of isothermal and non-isothermal crystallizations of nylon 1212. The Avrami exponent n was evaluated, and was found to be in the range of 1.56–2.03 for isothermal crystallization, and of 2.38–3.05 for non-isothermal crystallization. The activation energies (ΔE) were determined to be 284.5 KJ/mol and 102.63 KJ/mol, respectively, for the isothermal and non-isothermal crystallization processes by the Arrheniusʹ and the Kissingerʹs methods.
Keywords :
Nylon 1212 , crystallization , differential scanning calorimeter
Journal title :
Polymer
Serial Year :
2003
Journal title :
Polymer
Record number :
1719541
Link To Document :
بازگشت