Thermal degradation kinetic study of polystyrene/organophosphate composite

Simple item page
dc.contributor.authorMajoni, Stephen
dc.contributor.authorChaparadza, Allen
dc.date.accessioned2018-04-10T13:03:04Z
dc.date.accessioned2023-06-26T12:57:05Z
dc.date.available2018-04-10T13:03:04Z
dc.date.available2023-06-26T12:57:05Z
dc.date.issued2018
dc.descriptionJournal Articleen_US
dc.description.abstractA polystyrene/bis (2, 4-dicumylphenyl) pentaerythritol diphosphate (DPP) composite (PS-DPP) with a DPP loading of 10% (w/w) was prepared by the melt-compounding method. Results indicated that DPP had a thermal destabilization effect at temperatures below 380 °C. A comparative degradation kinetic analysis was performed employing the Kissinger method and the isoconversional methods of Friedman, Starink and Advanced Isoconversional Method (AICM). Variation of activation energy with extent of conversion (α) results from all the isoconversional methods showed that activation energy did not vary significantly with α for both pure PS and PS-DPP. Activation energies obtained from the Starink method above 380 °C were very close to those obtained from AICM consistent with activation energy values not varying significantly with α. The y(α) master plots and the Friedman methods where used to identify the reaction model and calculate the frequency factor respectively. The Sestak-Berggren model was identified as the most appropriate model to describe the thermal degradation of both PS and PS-DPP. The overall results indicates that activation energies of the composite were not significantly higher than those of pure PS at low conversion (α < 0.2) where DPP had a destabilizing effect but became higher when DPP had a stabilization effect.en_US
dc.identifier.citationMajoni, S. and Chaparadza A. 2018. Thermal degradation kinetic study of polystyrene/organophosphate composite.en_US
dc.identifier.urihttp://196.220.97.103:4000/handle/123456789/888
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectBis(2,4-dicumylphenyl)pentaerythritolen_US
dc.subjectdiphosphateen_US
dc.subjectPolymer compositesen_US
dc.subjectPSen_US
dc.subjectThermal stabilityen_US
dc.subjectDegradation kineticsen_US
dc.subjectFriedmanen_US
dc.subjectKissingeren_US
dc.titleThermal degradation kinetic study of polystyrene/organophosphate compositeen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Thermal degradation kinetic study of polystyreneorganophosphate.pdf
Size:
793.83 KB
Format:
Adobe Portable Document Format
Description:
Journal Article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Plain Text
Description:
Download
Collections
Applied Chemistry Publications