| 小麦壳的差热分析与红外光谱分析 |
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| 引用本文： | 杨贯羽,邹卫华,许庆增,韩润平.小麦壳的差热分析与红外光谱分析[J].河南科学,2006,24(1):41-43. |
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| 作者姓名： | 杨贯羽 邹卫华 许庆增 韩润平 |
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| 作者单位： | 郑州大学,化学系,河南,郑州,450052 |
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| 摘 要： | 对麦壳的热重曲线、差热曲线进行了分析,并对麦壳的红外光谱分析.加热250℃时质量损失约7%,250￣310℃时质量损失约50%,到460℃质量仅余约12%.在325℃、430℃分别有两个放热峰.麦壳的红外吸收光谱图主要由碳水化合物如木质素、纤维素等吸收带组成.1735cm-1和1615cm-1处的吸收峰是由C=O的伸缩振动引起的;1515cm-1的吸收峰是苯环的骨架振动峰,1243cm-1处是苯羟基中C-O的伸缩振动峰.
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| 关 键 词： | 麦壳 差热分析 红外光谱 |
| 文章编号： | 1004-3918(2006)01-0041-03 |
| 收稿时间： | 2005-10-28 |
| 修稿时间： | 2005年10月28 |
Thermal analysis and infrared spectra of native wheat husks |
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| YANG Guan-yu,ZOU Wei-hua,XU Qing-zeng,HAN Run-ping.Thermal analysis and infrared spectra of native wheat husks[J].Henan Science,2006,24(1):41-43. |
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| Authors: | YANG Guan-yu ZOU Wei-hua XU Qing-zeng HAN Run-ping |
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| Institution: | Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China |
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| Abstract: | The characteristics of wheat husks are studied by thermogravimetry analysis(TGA),differential thermal analysis(DTA) and infrared spectroscopy.Heated up to 250℃,a mass loss of 7% is observed.From 250~310℃,a mass loss of 50% is observed.Up to 460℃,the mass of remains is only 12%.The max peaks at 325℃ and 430℃ in DTA are observed by exothermic decomposed reaction,respectively.The native wheat husks were examined by infrared spectroscopy.The IR spectroscopy of the husks is mainly composed by the adsorption of carbohydrates,lignin,cellulose etc.The peaks located at 1733 and 1639cm-1 are characteristics of carbonyl groups stretching from carboxylates and ketones.The peak near 1511cm-1 is assigned to the stretching in aromatic rings.The peak at 1243cm-1 is from C-O stretching in phenols. |
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| Keywords: | wheat husks TG-DTA infrared spectroscopy |
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