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Investigation of the pyrolysis mechanisms of cellobiose in the presence of a polysiloxane

✍ Scribed by Marc Birot; Jean-Paul Pillot; Gérard Daudé; René Pailler; Alain Guette; Hervé Plaisantin; Sylvie Loison; Pierre Olry; Patrick Simon; Christine Labrugère; Michel Pétraud

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
957 KB
Volume
81
Category
Article
ISSN
0165-2370

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✦ Synopsis

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.

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