INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Bionanocomposites Based on Castor Oil using Glycerol as Crosslinker Agent reinforced with Cellulose nanocrystals or magnetite nanoparticles
Autor/es:
MEIORIN, CINTIA; CORCUERA, M.A.; ARANGUREN, MIRTA I.; MOSIEWICKI, MIRNA A.; ECEIZA, ARANZAZUS
Lugar:
Córdoba
Reunión:
Congreso; 16° Congreso Internacional de Metalurgia y Materiales (SAM/CONAMET 2016); 2016
Resumen:
Polyurethanes (PUs) are versatile polymers that have been applied in many diverse applications such as elastomers, foams (flexible, semirigid, and rigid), coatings, adhesives, and fibers [1].Until now, most of the commercial polyols used in the formulation of polyurethanes are derived from the petroleum industry. Nevertheless, there is growing global interest in obtaining PUs more environmentally compatible. In this sense, the use of vegetable oils as an alternative to synthetic raw materials has become more important in recent times because of their environmental and economic advantages. Vegetable oils are triglycerides, tri-esters of glycerol and fatty acids [2]. In particular castor oil (CO) is a triglyceride, wherein the ricinoleic acid is the main component. This oil is used in the manufacture of various products such as lubricants, paints, pharmaceuticals, etc. [3]. The hydroxyl groups naturally present in the CO can react directly or be used to generate higher molecular weight polyols by chemical reactions. In particular Lupranol BALANCE 50 (BASF) is a commercial polyether polyol of functionality=2.7 and based on castor oil (31% CO).The aim of this work was to synthesize bionanocomposites prepared from polyurethanes based on a commercial CO based polyol, methylene diphenyl diisocyanate (MDI), glycerol (Gly) (as crosslinking agent) and using nanocrystalline cellulose (CNC) or magnetite nanoparticles (MNP) as nano reinforcement. The synthesis was carried out in bulk and without catalyst in a single step polymerization varying the concentration of nano reinforcement in the PU. The properties of the resulting bionanocomposites were evaluated in order to study the effect and the structure/properties relationship that result from the incorporation of CNC or MNP in the PUs.