INVESTIGADORES
MOSIEWICKI mirna Alejandra
congresos y reuniones científicas
Título:
MOISTURE ABSORPTION EFFECTS ON WOODFLOUR/LINSEED OIL RESIN COMPOSITES
Autor/es:
M. A. MOSIEWICKI; J. BORRAJO; M. I. ARANGUREN
Lugar:
Los Cocos, Córdoba, Argentina
Reunión:
Simposio; III Argentine-Chilean Polymer Symposium. Archipol2005; 2005
Resumen:
Polymeric materials prepared from natural products have gained increased importance due to threats of uncertain petroleum supply in the future and concerns about environmental pollution. Natural products present some advantages, which turn them interesting: they are abundant and available from renewable resources, show low cost and offer the possibility of biodegradation (Rowell, 1997). Thermosetting resins can be obtained by chemical modification of the natural oils resulting in a new monomer with multiple functional sites and capable of crosslinking (Khot et al, 2001). The linseed oil resin obtained in this work was further reacted with styrene by means of free radical polymerization and filled with pine woodflour. The knowledge of the behavior of new natural polymeric composite materials exposed to humid environments is very important for evaluating their performance in final applications. Many works report the mechanical behavior of composites made of synthetic matrices and woodflour as filler (Marcovich et al, 1999), when they are subjected to humid environments, but there are not many studies that report the moisture effects on composites obtained from natural oil resins. In this study composite materials made from linseed oil resin and woodflour were exposed to humid environments in order to determine the influence of the moisture content on the mechanical properties of composites containing different percentages of woodflour and void contents. The effect of the time was also discussed.