Study on infrared spectrum of glycerol in variable temperature
Zhang Xiaoqian1, Zhao Cuiran1, Wang Lina1, Liu Huijie1, Jiang Shunzi2, Zhang Shuo2,#br#
Wang Xiaomeng2, Yu Hongwei2
1. Hebei Yipin Pharmaceutical Corporation Ltd., Shiiiazhuang 050002, China; 2. School of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, China
In the temperature range of 293～ 393 K, the thermal stability of glycerol was studied by variable temperature infrared spectrum ( including variable temperature one-dimensional infrared spectrum and second derivative infrared spectrum ). It is found that there are 6 infrared absorption modes of glycerol include νOH, νasCH2, νsCH2, δCH2, νasC-O and νsC-O . With the increase of temperature, the corresponding infrared absorption intensity of the main functional groups of glycerol decrease, and the corresponding infrared absorption frequency and peak pattern change obviously. This study shows that variable temperature infrared spectrum plays an important role in stability analysis of glycol.
