1. Short date palm tree fibers / polyepoxy composites prepared using RTM process: Effect of TEMPO mediated oxidation of the fibers
- Author
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Sbiai, Adil, Maazouz, Abderrahim, Fleury, Etienne, Sautereau, Henry, Kaddami, Hamid, Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Macromoléculaires (IMP-LMM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Bioorganique et Macromoléculaire - Faculté des Sciences et Techniques (LCBM), Université Cadi Ayyad [Marrakech] (UCA), De Loisy, Laure, and Doucet, Florian
- Subjects
[CHIM.POLY] Chemical Sciences/Polymers ,[CHIM.MATE] Chemical Sciences/Material chemistry ,POLYETHYLENE ,lcsh:Biotechnology ,CELLULOSE FIBERS ,GRAFT-COPOLYMERIZATION ,Composite ,Mechanical properties ,MECHANICAL-PROPERTIES ,[CHIM.MATE]Chemical Sciences/Material chemistry ,NATURAL-RUBBER ,DEGRADATION ,Interface ,WOOD ,[CHIM.POLY]Chemical Sciences/Polymers ,palm tree fibers ,lcsh:TP248.13-248.65 ,Date palm tree fibers ,PRIMARY ALCOHOL GROUPS ,ION Reprint ,POLYMER COMPOSITES ,TEMPO-mediated oxidation - Abstract
International audience; Short date palm tree lignocellulosic fibers were used as a reinforcing phase in a polyepoxy thermoset commodity resin. Unmodified fibers as well as counterparts chemically oxidized using TEMPO catalyst mediation were used as fillers for composite materials prepared in a Resin Transfer Molding process. The preparation was facilitated in the case of the composites based on oxidized fibers. During the process, the front displacement of injected resin was more regular, more homogeneous, and faster in the case of oxidized fibers. The morphology, thermal and mechanical properties of the resultant composites were characterized by SEM, DSC, DMA, as well as three-point bending and Charpy impact tests. An elevated reinforcing capability of the oxidized fibers as compared to their unmodified counterparts was demonstrated, particularly by a high strain test in the glassy state. This confirmed the enhanced filler/matrix interface observed in such materials during the process and in the final composite as analyzed by SEM. No significant difference in reinforcing capability of the two kinds of filler was observed in the DMA analysis.
- Published
- 2010