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:利用红外光谱 (窗片涂膜法和溶液法 )与凝胶色谱分别定量测定了胜利 10 0B道路沥青老化过程中羰基、亚砜官能团与相对分子质量分布的变化情况。老化的结果是羰基吸收面积逐渐增加 ,亚砜变化较小。两种IR分析方法得到类似的变化趋势 ,但红外窗片涂膜法具有快速、简便的优点。老化之后平均相对分子质量显著增大。这种变化可能是由于极性分子团之间缔合作用的结果
: The changes of carboxyl groups, sulfoxide functional groups and relative molecular weight distribution in the asphalt of Shengbai 10 0B road were quantitatively determined by infrared spectroscopy (window coating method and solution method) and gel chromatography. As a result of the aging, the carbonyl absorption area is gradually increased and the change of the sulfoxide is smaller. Similar trends have been observed in the two IR methods, but the infrared window coating method has the advantages of being quick and easy. After aging, the average relative molecular mass increased significantly. This change may be due to the association between polar groups of molecules