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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mcnally, G. M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2006Structure and performance of ABS-clay nanocomposites by melt compounding
- 2006Structure-property and pigment/organoclay interaction in PP nanocomposites
- 2006Structure and performance of novel acrylonitrile-styrene-acrylate nanocomposite
- 2005Polymorphism and crystallisation in metallocene PP-copolymer nanocomposites
- 2005Optimise organoclay exfoliation in polymer nanocomposites by customising the extrusion temperature gradient
- 2004Effect of phthalocyanine blue pigment on mechanical and thermal properties of polypropylene copolymerscitations
- 2004Comparison of the effect of pigments on the mechanical and thermal properties on two different catalysed propylene-ethylene random copolymers
- 2003The mechanical properties and crystallization behaviour of pigmented propylene-ethylene random copolymer
- 2003The effect of phthalocyanine pigment on the microstructural and mechanical performance of propylene-ethylene block copolymer
- 2003The structure am performance of injection moulded, pigmented polypropylene copolymers
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document
Polymorphism and crystallisation in metallocene PP-copolymer nanocomposites
Abstract
<p>The structures, polymorphism and crystallisation behaviour of a range of maleated and acrylated polypropylene (PP) layered-silicate nanocomposites were studied using wide-angle X-ray diffraction (WAXD), small-angle X-ray diffraction (SAXD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) techniques. The dispersed silicate layers were shown to restrict the γ-crystalline phase and selectively suppress the (220), (040) and (060) crystallographic planes of the PP. The PP crystallinity and crystallisation temperature decreased with an increasing degree of layered-silicate intercalation and exfoliation, by up to 26% and 10 degC respectively. This is attributed partly to interaction of the polymer and layered-silicate with the compatibiliser. The unique damping mechanism of the silicate layers reduced the PP β-phase glass transition temperature (T<sub>g</sub>). The endothermic crystalline peak pattern of the compatibiliser, determined by DSC was found to be a novel technique for characterising the degree of layered-silicate exfoliation in the PP matrix.</p>