Thermal characterization of xylan-graft-polyacrylonitrile

Cüneyt H. Ünlü*, Oya G. Atici

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work thermal characterization of two polyacrylonitrile copolymers, which obtained from emulsion polymerization of xylan, a polysaccharide from agricultural waste material (corn cob), initiated with ceric ammonium nitrate, was studied. Copolymers were synthesized at optimum conditions using two different acids, nitric acid and perchloric acid, in stock solutions of ceric ion and labelled as acid name as a subscript (X-PAN HNO3 and X-PAN HClO4). Thermal analyses were conducted using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). Data obtained from measurements were analyzed using GNU Octave and QtiPlot. Results showed that thermal decomposition is firstly related with molecular weight of the obtained copolymer. Oxidation of xylan main chain had also an effect on both decomposition mechanism and activation energy for decomposition.

Original languageEnglish
Title of host publication6th International Conference on Thermal Engineering Theory and Applications
Publication statusPublished - 2012
Event6th International Conference on Thermal Engineering Theory and Applications - Istanbul, Turkey
Duration: 29 May 20121 Jun 2012

Publication series

Name6th International Conference on Thermal Engineering Theory and Applications

Conference

Conference6th International Conference on Thermal Engineering Theory and Applications
Country/TerritoryTurkey
CityIstanbul
Period29/05/121/06/12

Keywords

  • Differential scanning calorimeter
  • Graft copolymer
  • Polyacrylonitrile
  • Thermal characterization
  • Thermogravimetric analysis

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