Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4540
Title: Natural zeolite polypropylene composite film preparation and characterization
Authors: Özmıhçı, Filiz
Balköse, Devrim
Ülkü, Semra
Özmıhçı, Filiz
Balköse, Devrim
Ülkü, Semra
Izmir Institute of Technology. Chemical Engineering
Keywords: Composite film
Crystallization
Natural zeolites
Poly(propylene) (PP)
Thermal degradation
Thermal properties
Water permeable
Issue Date: 13-Dec-2001
Publisher: John Wiley and Sons Inc.
Source: Özmıhçı, F., Balköse, D., and Ülkü, S. (2001). Natural zeolite polypropylene composite film preparation and characterization. Journal of Applied Polymer Science, 82(12), 2913-2921. doi:10.1002/app.2147
Abstract: In this research, the preparation and characterization of polypropylene (PP) and natural zeolite composites were studied. Natural zeolite mined in Gördes, Turkey was used as an alternative filler to CaCO3. Films were prepared by the extrusion of PP, and surface-modified zeolite was made by polyethylene glycol 4000 with 2-4% zeolite. Zeolite-filled composites had densities between 0.73 and 0.83 g/cm3 and had void fractions of 0.07-0.20. Although the permeability of water vapour through 2% zeolite-filled composites was very small, 4% zeolite-filled films had very high permeabilities. The yield stresses of 2-4% zeolite-containing films were around 26-27 N/mm2 and were lower than that of PP, which indicated no adhesion between PP and zeolite. The effect of zeolite on the thermal degradation behaviour in air and in a N2 atmosphere was also studied. In air, zeolites did not cause the oxidation of PP. In a N2 atmosphere, although the start of the thermal degradation of PP was retarded by zeolite, composites degraded at a faster rate than PP once the degradation started. At a processing temperature of 200°C, zeolites had no effect on the degradation of PP.
URI: http://doi.org/10.1002/app.2147
http://hdl.handle.net/11147/4540
ISSN: 0021-8995
0021-8995
1097-4628
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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