Kinetic analysis of the non-isothermal degradation of poly(vinyl chloride)/poly(ethylene oxide) blends
| Autor: | Nataša Stipanelov Vrandečić, Miće Jakić, Matko Erceg |
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| Rok vydání: | 2015 |
| Předmět: |
Kinetic analysis
Multivariate non-linear regression method Poly(vinyl chloride) Poly(ethylene oxide) Materials science Ethylene oxide technology industry and agriculture Oxide 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Vinyl chloride Isothermal process 010406 physical chemistry 0104 chemical sciences Autocatalysis chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Degradation (geology) Physical and Theoretical Chemistry 0210 nano-technology Nonlinear regression |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 123:1513-1522 |
| ISSN: | 1588-2926 1388-6150 |
| DOI: | 10.1007/s10973-015-5096-9 |
| Popis: | Kinetic analysis of the non-isothermal degradation of poly(vinyl chloride)/poly(ethylene oxide) (PVC/PEO) blends was performed using isoconversional Friedman method in combination with the multivariate nonlinear regression method. The dependencies of E on α have been evaluated at whole conversion range, and it was concluded that E depends on α for all investigated samples, which indicated the complex degradation mechanism. The kinetic analysis indicated four-stage degradation mechanism, except for PVC sample which showed five-stage degradation mechanism. As the PEO content increased in the investigated samples, the probable mechanism changed from the reaction of nth order with autocatalysis (Cn) to the Avrami–Erofeev reaction type (An). |
| Databáze: | OpenAIRE |
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