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FT-IR Analysis of Molecular Structure Evolvement of Poly(Ether urethanes) in Ozone Atmosphere

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Abstract:

The failure behavior of Poly (ether urethanes) in ozone atmosphere was investigated by FTIR, UV-Vis spectra and SEM analysis. It is found that some oxygen-containing groups such as the hydroxyl group and the carbonyl group increase first and then slightly decrease with the ozone oxidation time and the carbohydryl and ether bonds decrease slowly. After oxidation by ozone, the polyurethane molecule chains break on C-O in ether and urethane groups instead of chain crosslinking. In addition, ozone oxidization increases the color difference and lowers the UV light transparence of polyurethane.

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Periodical:

Advanced Materials Research (Volume 742)

Pages:

215-219

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.742.215

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Online since:

August 2013

Authors:

Hai Yan Wang, Yu Wen Liu, Ji Feng Tian, Bin Sun, Shi Jie Huang

Keywords:

Molecular Structure, Oxidation, Ozone, Polyurethane (PU)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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