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RESEARCH PRODUCT
Thermal stability of PP with acetylated sisal fiber: Romero Garc�a kinetic method
Jeanette GonzálezN. VelascoJ. GuevaraCarmen AlbanoCarmen AlbanoF. P. La MantiaM. Ichazosubject
PolypropyleneMaterials sciencePolymers and PlasticsDiffusionNucleationAnalytical chemistryGeneral ChemistryActivation energyCondensed Matter PhysicsDecompositionchemistry.chemical_compoundchemistryPolymer chemistryMaterials ChemistryThermal stabilitycomputerSISALNatural fibercomputer.programming_languagedescription
This work deals the effect of acetylated and non-acetylated sisal fiber 011 thermal degradation of polypropylene. Applying the R-G method at constant conversion levels of 0.1, 0.3, 0.5, 0.7 and 0.9 to thermograms of the ”PP/untreated sisal fiber” blend, E, values of 99, 213, 224, 187, and 145 kJ/mol were obtained, whereas they were 99, 299, 255, 205, 154 kJ/mol for the “PP/treated sisal fiber” blend. On the other hand, with the R-G method at constant temperature, activation energies within the range of 156-417 kJ/mol were obtained for the “PP/treated sisal fiber” blend and within the range of 126-344 kJ/mol for the “PP/untreated sisal fiber” blend. Additionally, the method establishes as dominant the following decomposition mechanisms: three-dimension limiting surface reaction between both phases, diffusion in two and three dimeiisions and first-order random nucleation and nuclei growth.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-11-01 | Polymer Bulletin |