1. Hebei Yipin pharmaceutical Corporation Ltd., Shijiazhuang 050035, China; 2. School of Chemical Engineering of Shijiazhuang University, Shijiazhuang 050035, China
In the temperature range of 303 ~ 393 K, the thermal stability of ice sheet was studied by means of thermo-changing infrared spectroscopy( including variable temperature one-dimensional spectrum, variable temperature second derivative spectrum and variable temperature fourth derivative spectrum ). Research show that there are seven types of infrared absorption modes in the ice chips, such as ν■、ν■、ν■、ν■、δ■、δ■和 ρ■. The infrared absorption intensity of the main functional groups decreases with the increase of temperature, but the corresponding infrared absorption frequency and peak type did not change. The results show that variable temperature infrared spectroscopy plays an important role in thermal stability analysis of borneol.