| FTIR-ATR技术研究聚氨酯类文物保护材料的光降解 |
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| 引用本文： | 王丽琴,梁国正,党高潮,王芳,凡小盼,付文彬.FTIR-ATR技术研究聚氨酯类文物保护材料的光降解[J].中国化学,2005,23(9):1257-1263. |
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| 作者姓名： | 王丽琴 梁国正 党高潮 王芳 凡小盼 付文彬 |
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| 作者单位： | [1]College of Chemical Engineering, Northwestern Polytechnical University, Xi＇an, Shaanxi 710072, China [2]College of Culture and Museology, Northwest University, Xi＇an, Shaanxi 710069, China [3]Department of Postgraduate, Northwest University, Xi＇an, Shaanxi 710069, China [4]Department of Chemistry, Northwest University, Xi＇an, Shaanxi 710069, China |
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| 摘 要： | Polyurethanes are one kind of relic protection materials commonly used. During artificial photo-ageing, three polyurethanes, HDI-based polyurethane, MDI-based polyurethane and TDI-based polyurethane, have been considered to undergo UV radiation. Photochemical degradation of the polyurethanes has been monitored by means of Fourier transform infrared spectroscopy with attenuated total reflection accessory （FTIR-ATR）. It was proved that the mechanism of the photochemical degradation of polyurethanes might be the scissions of carbamate （urethane） groups and the re-reactions of radical groups formed in the scission reactions. From the experiment results HDI-based polyurethane, an aliphatic diisocyanate, could be considered to be more suitably used as relic protection materials among these three polyurethanes for its ageing products with less color.
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| 关 键 词： | 聚亚安酯 FTIR-ATR 光化学 放射性 傅立叶变换方法 |
| 收稿时间： | 2005-04-08 |
| 修稿时间： | 2005-04-082005-07-08 |
Photochemical Degradation Study of Polyurethanes as Relic Protection Materials by FTIR-ATR |
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| WANG Li-Qin,LIANG Guo-Zheng,DANG Gao-Chao,WANG Fang,FAN Xiao-Pan,FU,Wen-Bin.Photochemical Degradation Study of Polyurethanes as Relic Protection Materials by FTIR-ATR[J].Chinese Journal of Chemistry,2005,23(9):1257-1263. |
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| Authors: | WANG Li-Qin LIANG Guo-Zheng DANG Gao-Chao WANG Fang FAN Xiao-Pan FU Wen-Bin |
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| Abstract: | Polyurethanes are one kind of relic protection materials commonly used. During artificial photo‐ageing, three polyurethanes, HDI‐based polyurethane, MDI‐based polyurethane and TDI‐based polyurethane, have been considered to undergo UV radiation. Photochemical degradation of the polyurethanes has been monitored by means of Fourier transform infrared spectroscopy with attenuated total reflection accessory (FTIR‐ATR). It was proved that the mechanism of the photochemical degradation of polyurethanes might be the scissions of carbamate (urethane) groups and the re‐reactions of radical groups formed in the scission reactions. From the experiment results HDI‐based polyurethane, an aliphatic diisocyanate, could be considered to be more suitably used as relic protection materials among these three polyurethanes for its ageing products with less color. |
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| Keywords: | polyurethane FTIR-ATR photochemical degradation |
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