Chemical and Materials Engineering Vol. 3(4), pp. 73 - 78
DOI: 10.13189/cme.2015.030402
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A Kinetics Study on the Thermal Degradation of Starch/Poly (Vinyl Alcohol) Blend


Mohammad Taghi Taghizadeh *, Reza Abdollahi
Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Iran

ABSTRACT

The thermal degradation of starch/poly (vinyl alcohol) (PVA) blend was studied by using TG in air atmosphere. Thermo-analytic investigations on pure starch film and starch/PVA blend film were carried out to evaluate the thermal stability and the respective activation energy of the materials. Experiments in air atmosphere and under non-isothermal and isothermal condition carried out. The Kissinger and Flynn-Wall-Ozawa methods were used to calculate the activation energy of non-isothermal degradation of starch and starch/PVA blends. The results show that these two methods were suitable and effective to describe the thermal degradation of starch and starch/PVA blends. These results are shown that starch/PVA blend was thermally less stable than pure starch and thermal stability of films decreased with increasing PVA content.

KEYWORDS
Starch, Poly Vinyl Alcohol, Thermal Degradation

Cite this paper
Mohammad Taghi Taghizadeh , Reza Abdollahi (2015). A Kinetics Study on the Thermal Degradation of Starch/Poly (Vinyl Alcohol) Blend. Chemical and Materials Engineering, 3 , 73 - 78. doi: 10.13189/cme.2015.030402.