摘要
变温红外光谱法是研究结晶化合物结晶谱带的一种有效方法。作者合成了左旋丙交酯 ,采用红外光谱仪、核磁共振仪、热分析仪表征了样品的结构与性能 ;然后利用红外变温法在 15～ 12 0℃范围内对左旋丙交酯做了变温研究。结果发现当T =95℃时丙交酯在 770～ 80 0cm-1区域有两条吸收谱带变化明显 ,样品退火后 ,变化的两谱带又基本复原 ,由此推测 ,此两谱带与左旋丙交酯的结晶相关联 ,可能是其结晶相关谱带。
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 degrees C after being investigated by FTIR spectra between 15-120 degrees C. 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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2005年第3期384-386,共3页
Spectroscopy and Spectral Analysis
基金
河南省自然科学基金 (0 1 1 1 0 32 0 0 )资助项目
