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利用变温红外光谱技术测定了 4种多元醇在 4 0 0 0～ 4 50 cm- 1 范围内的 IR光谱 ,分析了羟基的伸缩振动和面外变形振动随温度的变化情况 ,并结合 DSC对多元醇固 -固相变机理进行了探讨 .
The IR spectra of four polyols in the range of 4 0 0 0 ~ 4 50 cm-1 were measured by the method of variable temperature infrared spectroscopy. The changes of hydroxyl stretching vibration and out-of-plane deformation vibration with temperature were analyzed. Alcohol solid - solid phase change mechanism was discussed.