Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725182981
Total Pages : 34 pages
Book Rating : 4.1/5 (829 download)
Book Synopsis Synthesis and Thermal Stability of Carborane Containing Phosphazenes by : National Aeronautics and Space Administration (NASA)
Download or read book Synthesis and Thermal Stability of Carborane Containing Phosphazenes written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-13 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carborane substituted polyphosphazenes were prepared by the thermal polymerization of phenyl-carboranyl penta chlorocyclotriphosphazene. Successive isothermal vacuum pyrolyses were conducted on the polymer and examined for structural changes by infrared spectroscopy. The degradation products were ascertained by gas chromatography-mass spectrometric analysis. It was found that the presence of the carborane group improves the thermal stability of the polymer by retarding the ring chain equilibrium processes of decomposition. Fewell, L. L. and Basi, R. J. and Parker, J. A. Ames Research Center NASA-TM-84341, A-9190, NAS 1.15:84341 RTOP 505-44-21...