Title of article :
Thermal Degradation Kinetics of Polyamide 6,6 Cable Ties by Thermogravimetric Analysis
Author/Authors :
Rammo, Nabil N. University of Salahaddin - College of Education Scientific Departments - Dept of Physics, Iraq , Mahdi, Hind A. M. University of Baghdad - College of Education for Pure Science(Ibn Al-Haitham - Dept of Physics, Iraq
Abstract :
The thermal degradation of cable ties of polyamide (PA6,6) neat and UV stabilized was investigated by thermogravimetry (TG) and its derivative (DTG) at several heating rates between 5 and 80 oC min-1 in helium atmosphere. High heating rates signal novel peaks in the DTG curves that indicate melting temperature of PA6,6. The kinetic parameters calculated via isoconversion and nonisothermal data using the Flynn-Wall-Ozawa, Kissinger and Coats-Redfern methods showed comparable activation energy values. Exposure of the ties to outdoor environment causes pre- mature stress cracking and brittle failure due to prevalence of crosslinking reaction occurring in the polymer chains.
Keywords :
Polyamide 6 , 6 , Thermal degradation , Kinetic analysis , Thermogravimetric analysis , Activation energy , Cable ties .
Journal title :
Ibn Alhaitham Journal For Pure and Applied Science
Journal title :
Ibn Alhaitham Journal For Pure and Applied Science
