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Effect of the mineral filler on the surface properties of co-ground polymeric composites

Zapata-Massot, Céline and Le Bolay, Nadine Effect of the mineral filler on the surface properties of co-ground polymeric composites. (2006) In: 5th International Conference for Conveying and Handling of Particulate Solids , 27-31 Aug 2006, Sorrento, Italia .

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This study presents results on the influence of the filler nature on the surface properties of polymeric composites produced by co-grinding in a tumbing ball mill. The polymer used in the study was poly(vinyl acetate) which is a model material, while two mineral fillers were tested: calcium carbonate and silica. The variations of the surface properties of the separately ground and co-groundmaterials were studied for different grinding times, using the sessile drop method, and the properties were compared to those of matrix _ filler blends. The different components of the surface energy were determined and the Van Oss decomposition was used. Grinding generates great changes of particle surface and especially of the Lewis acid _ base energy and these changes depend on the filler nature. Thus, particle agglomeration may be due to an electronic deficit at the particle surface, which is immediately replaced by another particle also possessing an electronic deficit.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
Deposited On:17 Nov 2008 10:55

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