【作者】 褚艳红； 张国宝； 赵根锁； 余守志；

【Author】 CHU Yan-hong~(1,2),ZHANG Guo-bao~(1*),ZHAO Gen-suo~1,YU Shou-zhi~1 1.Analyses and Testing Center,Province of Henan,Zhengzhou 450002,China 2.College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475001,China

【机构】 河南省分析测试中心； 河南大学化学化工学院；

【摘要】 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。更多还原

【Abstract】 In this paper,the sample of L-LA was synthesized and characterized by FTER,NMR and DSC.The changes of L-Lactide spectra with temperature in the range of 15-120℃were recorded.It was found that two peaks at 792.7 cm^-1 and 773.4 cm^-1 change sharply at about melting point.When the temperature went on increasing,these peaks are almost unchangeable,but they returned to the original state after annealing.It is deduced that these two peaks are linked with crystalline of L-LA.更多还原