Thermal stability of PVC with γ-APS-g-MMT and zeolite stabilizers by TGA Technique
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Author list: Thongpin C., Juntum J., Sa-Nguan-Moo R., Suksa-Ard A., Sombatsompop N.
Publisher: SAGE Publications
Publication year: 2010
Journal: Journal of Thermoplastic Composite Materials (0892-7057)
Volume number: 23
Issue number: 4
Start page: 435
End page: 445
Number of pages: 11
ISSN: 0892-7057
eISSN: 1530-7980
Languages: English-Great Britain (EN-GB)
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Abstract
In this work, hexadecyltrimethylammonium bromide modified montmorrillonite (OMMT), 3-aminopropyltriethoxysilane-grafted montmorrillonite (γ-APS-g-MMT), and zeolite were used as thermal stabilizers in PVC compound. The thermal stabilities of PVC were then assessed in terms of decomposition temperatures by thermal gravimetric analysis. X-ray diffractometer (XRD) was used to characterize the d-spacing of MMT as a result of γ-APS modification. The XRD results suggested that the d-spacing of silicate layers could increase with a chemical grafting of γ-APS molecules onto MMT. The zeolite was found to be the most effective stabilizer for PVC as compared with OMMT and γ-APS-g-MMT stabilizers. It was found that the greater the zeolite and γ-APS-g-MMT loadings in PVC compound, the higher the decomposition temperatures up to 7 phr. No synergic effect was observed on thermal stabilities of PVC by incorporating a mixture of γ-APS-g-MMT and zeolite stabilizers in PVC compound. © The Author(s), 2010.
Keywords
γ-APS-g-MMT
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