Author/Authors :
Birot، نويسنده , , Marc and Pillot، نويسنده , , Jean-Paul and Daudé، نويسنده , , Gérard and Pailler، نويسنده , , René and Guette، نويسنده , , Alain and Plaisantin، نويسنده , , Hervé and Loison، نويسنده , , Sylvie and Olry، نويسنده , , Jean Pierre and Simon، نويسنده , , Patrick and Labrugère، نويسنده , , Christine and Pétraud، نويسنده , , Michel، نويسنده ,
Abstract :
Treatment of cellulose yarns by a polysiloxane followed by a fast pyrolysis step gave carbon fibres exhibiting strong enhancement of their mechanical resistance. To account for the beneficial effect of the polysiloxane, an investigation of the pyrolysis mechanisms was performed on a model system based on cellobiose and a polysiloxane resin. A chemical interaction between cellobiose and the resin (e.g. grafting of siloxane fragments onto the cellobiose) was established by using various physicochemical analysis techniques: nuclear magnetic resonance (NMR), photoelectron spectrometry (XPS), electronic paramagnetic resonance (EPR), Flash pyrolysis–gas chromatography–mass spectrometry (FP/GC/MS) and IR.
Keywords :
Carbon fibre , Redistributions , Polysiloxane , Pyrolysis , Cellobiose
