1. College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China 2. Analyses and Testing Center, Province of Henan, Zhengzhou 450002, China
Abstract：Variable temperature FTIR spectra method was used to study the crystalline spectra of crystal compounds. In the present paper, the sample of L-LA was synthesized and characterized by FTIR, NMR and DSC. It was found that the two peaks in the range of 800-770 cm-1 changed sharply at 95 ℃ after being investigated by FTIR spectra between 15-120 ℃. When the temperature increased, these peaks remained almost unchanged, but they returned to the original state after annealing. It was deduced that these two peaks are linked to the crystalline of L-LA.
Key words：L-Lactide;FTIR spectra;Variable temperature method
褚艳红1, 2, 张国宝2*, 赵根锁2, 余守志2 . 变温红外光谱法研究左旋丙交酯(L-LA)的结晶相关谱带 [J]. 光谱学与光谱分析, 2005, 25(03): 384-386.
CHU Yan-hong1, 2，ZHANG Guo-bao2*，ZHAO Gen-suo2，YU Shou-zhi2 . Study on the Peaks Linked to the Crystalline of L-LA with Variable Temperature FTIR Spectra Method . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(03): 384-386.
