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Infrared spectra analysis of O-H on aggregate structure formation of oleamide in sulfuric acid solution

机译：O-H对硫酸溶液中油酰胺聚集体结构形成的红外光谱分析

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Fourier transform infrared spectrum (FT-IR) combined with Gaussian function linear fitting is applied to analyze the aggregation structure in the system of oleamide mixed with sulfuric acid aqueous solution. The possible aggregation structure is proposed according to the shifts of hydroxyl peaks and the changes of their percentage areas. Results show that the interaction modes between sulfuric acid and oleamide vary with the different proportions of two ingredients. When the molar ratio of sulfuric acid to oleamide is low, the major forms of water existing in the system are bulk-like water and the water combining with N+-H as N+-H...O-H-2. With the increase of the molar ratio of sulfuric acid to oleamide, N+ forms ion-pair complex through attracting sulfate radical. That may be responsible to the scum-like aggregation. (C) 2015 Published by Elsevier B.V.
机译：采用傅里叶变换红外光谱（FT-IR）结合高斯函数线性拟合，对油酰胺与硫酸水溶液混合体系的聚集结构进行了分析。根据羟基峰的移动及其百分比面积的变化，提出了可能的聚集结构。结果表明，硫酸和油酰胺之间的相互作用方式随两种成分的不同比例而变化。当硫酸与油酰胺的摩尔比低时，系统中存在的主要水形式为块状水，且水与N + -H结合为N + -H ... O-H-2。随着硫酸与油酰胺摩尔比的增加，N +通过吸引硫酸根而形成离子对络合物。这可能是浮渣般聚集的原因。 （C）2015由Elsevier B.V.发布

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