On a novel approach to the thermogravimetric analysis of polymers: Polystyrene

Authors

Mircea Chipara, The University of Texas Rio Grande ValleyFollow
Karen Lozano, The University of Texas Rio Grande ValleyFollow
Dorina M. Chipara, The University of Texas Rio Grande ValleyFollow
Carlos Delgado, The University of Texas Rio Grande Valley
Victoria Padilla, The University of Texas Rio Grande Valley

Document Type

Article

Publication Date

9-23-2022

Abstract

A novel equation that describes the temperature dependence of the residual mass fraction (as determined by thermogravimetric analysis) is derived, assuming that the dependence of the residual mass fraction on temperature has a sigmoidal shape. The equation allows the estimation of the sigmoidal activation energy solely from the experimental data at a single heating rate. The consistency with the isoconversional approach and the relationship between the Ozawa and sigmoidal activation energies are reported. The equation was successfully tested by the thermal degradation of atactic polystyrene at various heating rates. Both the thermograms and their derivatives are analyzed in detail.

Comments

© The Author(s), under exclusive licence to The Materials Research Society, 2022

https://rdcu.be/cWP83

File retrieved: https://par.nsf.gov/servlets/purl/10420482

Recommended Citation

Chipara, M., Lozano, K., Chipara, D. et al. On a novel approach to the thermogravimetric analysis of polymers: Polystyrene. MRS Communications (2022). https://doi.org/10.1557/s43579-022-00274-6

Publication Title

MRS Communications

DOI

10.1557/s43579-022-00274-6