[FTIR spectroscopic study on the stress effect of compositions of macromolecular structure in tectonically deformed coals].
[FTIR spectroscopic study on the stress effect of compositions of macromolecular structure in tectonically deformed coals].
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发表时间：
2005-08
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通讯作者：
Y. Ju;B. Jiang;Quanlin Hou;Guiliang Wang
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作者：
Y. Ju;B. Jiang;Quanlin Hou;Guiliang Wang
利用傅里叶变换红外光谱（FTIR）研究了构造煤中大分子结构组成的应力效应。结果表明，不同构造变形煤中芳香结构、脂肪结构和含氧官能团的吸收带在峰波数上基本一致，但峰的强度不同，这与构造变形煤在构造应力作用下的变形程度和变形机制不同有关。在低、中、高煤阶的变质变形环境中，构造变形煤的富氢度和富氧度随应力的增大而降低，而环缩度则增大。但大分子结构组成含量的变化存在差异。这表明FTIR可以用于构造煤大分子结构组成的应力效应研究。
Fourier transform infrared spectroscopy (FTIR) was applied to the study of the stress effect of compositions of macromolecular structure in tectonically deformed coals. The results showed that in different kinds of tectonically deformed coals, the absorption band of aromatic structure, aliphatic structure and oxygen functional groups nearly consistent in the peak wave number, but the intensity of the peak is different which is justly influenced by different deformation degree and deformation mechanism of tectonically deformed coals under tectonic stress. In the metamorphic and deformed environments of the low, middle and high coal rank, for tectonically deformed coals, with the increasing stress, hydrogen-enriched degree and oxygen-enriched degree decrease, while the degree of ring condensation increases. But there are differences in the change of compositions contents of macromolecular structure. This might indicate that the FTIR could be used in the stress effect of compositions of macromolecular structure in tectonically deformed coals.