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Synthèse par extrusion réactive de polycondensats de polyamides

Abstract : The aim of this work is to study the feasibility of addition of nylon salt to polyamide (PA) by a reactive extrusion process. As example, the addition of 6T salt, which includes aromatic monomers, to PA 66 is performed in order to synthesize PA 66/6T. This latter replies to demand of high resistance temperature polymer. Consequently, the progress rate of the reaction and the rate of 6T motifs insertion have to be maximized.This work includes the synthesis and the analysis of 6T salt, PA 6T and PA 66/6T. 6T salt synthesis is performed since it is not commercialised. PA 6T is synthesized in order to identify aromatic hydrogen in PA 66/6T molecule. About this latter, it is necessary to adjust and to study the extrusion process. So, the influences of few process parameters are studied as, for example, pressure level on vent gas of the extruder.With the best process parameters, the progress rate is 93 mol% and the rate of 6T motifs insertion is 15,3 mol%. Yet, PA 66/6T presents a significant excess of acidic end group
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  • HAL Id : tel-01754528, version 1



Jean-Marie Boissière. Synthèse par extrusion réactive de polycondensats de polyamides. Alimentation et Nutrition. Institut National Polytechnique de Lorraine, 2008. Français. ⟨NNT : 2008INPL062N⟩. ⟨tel-01754528⟩



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