Simultaneous crystallization and decomposition of PVA/MMT composites during non-isothermal process

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dc.contributor.authorLi, CPen_AU
dc.contributor.authorHou, TTen_AU
dc.contributor.authorVongsvivut, JPen_AU
dc.contributor.authorLi, YZen_AU
dc.contributor.authorShe, XDen_AU
dc.contributor.authorShe, FHen_AU
dc.contributor.authorGao, WMen_AU
dc.contributor.authorKong, LXen_AU
dc.date.accessioned2024-01-12T02:14:20Zen_AU
dc.date.available2024-01-12T02:14:20Zen_AU
dc.date.issued2015-10-20en_AU
dc.date.statistics2023-12-22en_AU
dc.description.abstractDecomposition of poly(vinyl alcohol)/montmorillonite clay (PVA/MMT) composites during melting-crystallization was experimentally confirmed by morphology and molecular structure changes. In particular, FTIR spectra show the shift of O-H stretching band as well as enhanced intensities of C-O stretching and CH2 rocking vibrational modes. Furthermore, Raman deconvolution indicates that C-H wagging, CH2-CH wagging, CH-CO bending and CH2 wagging modes in amorphous domains were all decreased greatly. Moreover, this decomposition leads to decreased melting enthalpy, melting point, crystallization enthalpy and crystallization temperature. Crystallization analysis shows that the MMT incorporated slows down the crystallization process in the PVA matrix regardless of the nucleation capability of MMT. Despite the severe decomposition, the crystallization kinetics still corroborated well with common classical models. As a result, molecular structure changes and crystallization retardation observed in this study clearly indicate the strong effects of the thermal degradation on the non-isothermal crystallization of PVA/MMT composites. © 2015 Elsevier B.V.en_AU
dc.identifier.citationLi, C., Hou, T., Vongsvivut, J., Li, Y., She, X., She, F., Gao, W. M., & Kong, L. (2015). Simultaneous crystallization and decomposition of PVA/MMT composites during non-isothermal process. Thermochimica Acta, 618, 26-35. doi:10.1016/j.tca.2015.09.009en_AU
dc.identifier.issn0040-6031en_AU
dc.identifier.journaltitleThermochimica Actaen_AU
dc.identifier.pagination25-35en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15344en_AU
dc.identifier.volume618en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.relation.urihttps://doi.org/10.1016/j.tca.2015.09.009en_AU
dc.subjectPolyvinylsen_AU
dc.subjectAlcoholsen_AU
dc.subjectMontmorilloniteen_AU
dc.subjectCrystallizationen_AU
dc.subjectDecompositionen_AU
dc.subjectMolecular structureen_AU
dc.titleSimultaneous crystallization and decomposition of PVA/MMT composites during non-isothermal processen_AU
dc.typeJournal Articleen_AU
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