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Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser

The mechanical properties and crystalline characteristics of polypropylene (PP) and nano precipitated calcium carbonate (NPCC) nanocomposites prepared via melt mixing in an internal mixer and melt extrusion in a twin screw extruder, were compared. The effect of maleic anhydride grafted PP (PP-g-MAH)...

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Main Authors:	Fuad, M. Y. A., Hanim, H., Zarina, R., Ishak, Z. A. M., Hassan, Azman
Format:	Article
Language:	English
Published:	Budapest University of Technology and Economics Department of Polymer Engineering 2010
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/26670/1/FuadMYA2010_PolypropyleneorCalciumCarbonateNanocomposites.pdf http://eprints.utm.my/id/eprint/26670/ http://dx.doi.org/10.3144/expresspolymlett.2010.76
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spelling	my.utm.266702017-10-13T12:46:36Z http://eprints.utm.my/id/eprint/26670/ Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser Fuad, M. Y. A. Hanim, H. Zarina, R. Ishak, Z. A. M. Hassan, Azman QD Chemistry The mechanical properties and crystalline characteristics of polypropylene (PP) and nano precipitated calcium carbonate (NPCC) nanocomposites prepared via melt mixing in an internal mixer and melt extrusion in a twin screw extruder, were compared. The effect of maleic anhydride grafted PP (PP-g-MAH) as a compatibiliser was also studied using the internal mixer. At low filler concentration of 5 wt%, impact strength was better for the nanocomposites produced using the internal mixer. At higher filler loading of more than 10 wt%, the extrusion technique was more effective to dis- perse the nanofillers resulting in better impact properties. The impact results are consistent with the observations made from Scanning Electron Microscope (SEM) morphology study. As expected, the flexural modulus of the nanocomposites increased with filler concentration regardless of the techniques utilised. At a same filler loading, there was also no signifi- cant difference in the moduli for the two techniques. The tensile strength of the mixed nanocomposites were found to be inferior to the extruded nanocomposites. Introduction of PP-g-MAH improved the impact strength, tensile strength and modulus of the mixed nanocomposites. The improvements may be attributed to better interfacial adhesion, as evident from the SEM micrographs which displayed better dispersion of the NPCC in the presence of the compatibiliser. Though NPCC particles have weak nucleating effect on the crystallization of the PP, addition of PP-g-MAH into the mixed nanocompos- ites has induced significant crystallization of the PP. Budapest University of Technology and Economics Department of Polymer Engineering 2010 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/26670/1/FuadMYA2010_PolypropyleneorCalciumCarbonateNanocomposites.pdf Fuad, M. Y. A. and Hanim, H. and Zarina, R. and Ishak, Z. A. M. and Hassan, Azman (2010) Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser. Express Polymer Letters, 4 (10). pp. 611-620. ISSN 1788-618X http://dx.doi.org/10.3144/expresspolymlett.2010.76 DOI:10.3144/expresspolymlett.2010.76
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Fuad, M. Y. A. Hanim, H. Zarina, R. Ishak, Z. A. M. Hassan, Azman Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
description	The mechanical properties and crystalline characteristics of polypropylene (PP) and nano precipitated calcium carbonate (NPCC) nanocomposites prepared via melt mixing in an internal mixer and melt extrusion in a twin screw extruder, were compared. The effect of maleic anhydride grafted PP (PP-g-MAH) as a compatibiliser was also studied using the internal mixer. At low filler concentration of 5 wt%, impact strength was better for the nanocomposites produced using the internal mixer. At higher filler loading of more than 10 wt%, the extrusion technique was more effective to dis- perse the nanofillers resulting in better impact properties. The impact results are consistent with the observations made from Scanning Electron Microscope (SEM) morphology study. As expected, the flexural modulus of the nanocomposites increased with filler concentration regardless of the techniques utilised. At a same filler loading, there was also no signifi- cant difference in the moduli for the two techniques. The tensile strength of the mixed nanocomposites were found to be inferior to the extruded nanocomposites. Introduction of PP-g-MAH improved the impact strength, tensile strength and modulus of the mixed nanocomposites. The improvements may be attributed to better interfacial adhesion, as evident from the SEM micrographs which displayed better dispersion of the NPCC in the presence of the compatibiliser. Though NPCC particles have weak nucleating effect on the crystallization of the PP, addition of PP-g-MAH into the mixed nanocompos- ites has induced significant crystallization of the PP.
format	Article
author	Fuad, M. Y. A. Hanim, H. Zarina, R. Ishak, Z. A. M. Hassan, Azman
author_facet	Fuad, M. Y. A. Hanim, H. Zarina, R. Ishak, Z. A. M. Hassan, Azman
author_sort	Fuad, M. Y. A.
title	Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
title_short	Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
title_full	Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
title_fullStr	Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
title_full_unstemmed	Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
title_sort	polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser
publisher	Budapest University of Technology and Economics Department of Polymer Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/26670/1/FuadMYA2010_PolypropyleneorCalciumCarbonateNanocomposites.pdf http://eprints.utm.my/id/eprint/26670/ http://dx.doi.org/10.3144/expresspolymlett.2010.76
_version_	1643647825095950336
score	13.211869

Polypropylene/calcium carbonate nanocomposites - effects of processing techniques and maleated polypropylene compatibiliser

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