| 光谱学与光谱分析 |
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| Study of FTIR Spectra and Thermal Analysis of Polyurethane |
| JIANG Zhi1 , YUAN Kai-jun1,LI Shu-fen1*,CHOW W K2 |
1. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
2. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China |
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Abstract The thermal behavior of polyester-polyurethane and polyether-polyurethane in air atmosphere was investigated by using FTIR analysis in the temperature range from 20 to 400 ℃. The thermal degradation behaviors of polyester-polyurethane and polyether-polyurethane in different atmospheres were investigated by using thermogravimetry analysis(TG) in the temperature range from 20 to 700 ℃. The FTIR results together with the TG investigations showed that polyester-polyurethane has two degradation steps in air, but polyether-polyurethane has only one degradation step. The thermal analysis results also showed that the onset degradation temperature of polyether-polyurethane is lower than that of polyester-polyurethane, suggesting that the thermal stability of polyester-polyurethane is higher than polyether-polyurethane, and the onset degradation temperature of polyurethane in air is lower than that in nitrogen, suggesting that the presence of oxygen affects significantly the break of the polymeric chains.
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Received: 2005-06-29
Accepted: 2005-09-20
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Corresponding Authors:
LI Shu-fen
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| Cite this article: |
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JIANG Zhi,YUAN Kai-jun,LI Shu-fen, et al. Study of FTIR Spectra and Thermal Analysis of Polyurethane[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(04): 624-628.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I04/624 |
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