Producción Científica Profesorado

Thermal degradation study of PVA derivative with pendant phenylthionecarbamate groups by DSC/TGA and GC/MS.



Gordillo Martínez, Alberto José

2015

I. Gomez, E.M. Otazo, H. Hernandez, E. Rubio, J. Varela, M. Ramírez, I. Barajas, A.J. Gordillo. Thermal degradation study of PVA derivative with pendant phenylthionecarbamate groups by DSC/TGA and GC/MS. Polymer Degradation and Stability. 112 (2015) 132 -136. Ed. Elsevier. ISSN: 0141-3910. DOI: 10.1016/j.polymdegradstab.2014.12.027


Abstract


The thermal study of poly(vinyl phenylthionecarbamate) was carried out through DSC and TGA analysis. DSC curve affords five decomposition steps whose temperature ranges were consistent with the TGA weight loss graphic. Tg transition takes place at 219 C. The largest PVA-PT mass loss occurs at 120?340 C, within two overlapped process with an average ?H = 170.4 J/g. These processes were assigned to the vicinal hydroxyl groups' water elimination, followed by the polymer defunctionalization. The PVA derivative thermal decomposition mechanism was proposed based on GC/MS results.



Producto de Investigación




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