Thermal degradation of poly(vinyl chloride)/poly(ethylene oxide)blends : thermogravimetric analysis (CROSBI ID 196146)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Jakić, Miće ; Stipanelov Vrandečić, Nataša ; Klarić, Ivka
engleski
Thermal degradation of poly(vinyl chloride)/poly(ethylene oxide)blends : thermogravimetric analysis
Thermal stability of poly(vinyl chloride)/poly(ethylene oxide) (PVC/PEO) blends has been investigated by thermogravimetric analysis (TGA) in dynamic and isothermal heating regime. PVC/PEO blends were prepared by hot-melt extrusion (HME). According to TG analysis, PEO decomposes in one stage, while PVC and PVC/PEO blends in two degradation stages. In order to evaluate the effect of PEO content on the thermal stability of PVC/PEO blends, different criteria were used. It was found that thermal stability of PVC/PEO blends depend on the blend composition. The interactions of blends components with their degradation products were confirmed. By using multiple heating rate kinetics the activation energies of the PVC/PEO blends thermal degradation were calculated by isoconversional integral Flynn- Wall-Ozawa and differential Friedman method. According to dependence of activation energy on degree of conversion the complexity of degradation processes was determined.
activation energy; poly(ethylene oxide); poly(vinyl chloride); polymer blends; thermal degradation; thermogravimetric analysis
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Podaci o izdanju
98 (9)
2013.
1738-1743
objavljeno
0141-3910
10.1016/j.polymdegradstab.2013.05.024