Title of article
Effect of some additives on degradation of poly (vinyl chloride- co- vinyl
Author/Authors
Taghizadeh, Mohamamd Taghi Department of Physical Chemistry - Faculty of Chemistry - University of Tabriz , Agha Bozorgi, Abbas Department of Physical Chemistry - Faculty of Chemistry - University of Tabriz
Pages
14
From page
97
To page
110
Abstract
The thermal decomposition of 86 % vinyl chloride 14 % vinyl acetate copolymer was
studied by the conductometry technique in the presence of nitrogen. The kinetics of stability and
thermal degradation of vinyl chloride- co- vinyl acetate (PVC- co- PVAc) copolymer with
copper, copper oxide and tricalcium dicitrate (st) were investigated at various temperatures (150-
180 oC ) in solution. The rate coefficients for the degradation of the copolymer were determined.
The energies of activation, determined from the temperature dependence of the rate coefficients
for copolymer alone was 63.536 kJ mol-1 and in the presence of copper, copper oxide and
tricalcium dicitrate were 44.224, 55.594 and 110.332 KJ mol-1, respectively. The results show
that thermal stability was increased in the presence of tricalcium dicitrate, but its thermal
stability was decreased in the presence of copper and copper oxide.
Keywords
Thermal degradation , Copolymers , Vinyl chloride-co-Vinyl acetate , Additive , Activation energies
Journal title
Astroparticle Physics
Serial Year
2010
Record number
2437706
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