Abstract
The modified Poly-m-phenylene terephthalamide (co-PMTA3) was prepared by polycondensa-tion of m-Phenylenediamine, 4, 4’-diamino diphenyl sulfone and terephthaloyl dichloride with a mole ratio of 3:1:4 in N, N’-dimethylacetamide at low temperature. co-PMTA3 was soluble and expected to transform into fiber. The heat-resistance and thermal stability of co-PMTA3 were investigated by differential scanning calorimetry and thermogravi-metric analysis, respectively. The results indicate that the co-PMTA3 possesses excellent heat-resistance and thermal stability with a glass transition temperature of 318.4 °C, initial thermal decomposition temperatures of 404.0 °C in air and 445.5 °C in nitrogen. In addition, the active energy (Ea) of the decomposition process in air atmosphere was estimated by Ozawa-Flynn-Wall method which was between 116.2 and 315.6 kJ/mol. The results indicate that the decomposition of co-PMTA3 air atmosphere is an overall reaction of multi elementary reactions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IOP Conference Series: Earth and Environmental Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
