Thermal stability of polyurethanes |
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Authors: | J Simon F Barla Anna Kelemen-Haller F Farkas Márta Kraxner |
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Institution: | (1) Hungarian Oil and Gas Research Institute, MÁFKI), P.O. Box 167, H-8201 Veszprém, Hungary;(2) Artifical Leather Factory, Graboplast, P.O. Box 17, H-9002 Gyór, Hungary |
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Abstract: | Summary The combined application of thermogravimetry reactiongas chromatography and gel-permeation chromatography permits to follow the heat degradation of polyurethane polymers in inert gas, air and water-saturated environment. The examinations give information on the rate of thermal degradation, the individual volatile degradation components, the critical points of the polymer chains and on the change of their molecular-weight distribution. Gas chromatographic examinations also permit the identification of the chain-extending components of different types of polyurethanes. |
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Keywords: | Gel-permeation chromatography Reaction-gas chromatography Polyurethanes Thermal stability Thermogravimetry |
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