β-环糊精/芘包合物的制备与表征研究  

Study of the Preparation and Characterization of Pyrene and β- cyclodextrin Inclusion Compound

作　　者：王立红[1,2] 丁克强[2] 赵振华[1] 刘廷凤[2] 杨凤[2] 郭光[2] 

机构地区：[1]河海大学环境院,南京210098 [2]南京工程学院环境学院,南京211167

出　　处：《四川环境》2015年第6期5-9,共5页Sichuan Environment

基　　金：国家自然科学基金(41271329);南京工程学院校级课题(QKJB2010021)

摘　　要：对芘和β-环糊精包合物的制备与表征进行研究,通过饱和水溶液法、超声法以及研磨法进行制备,利用紫外光谱(UV)、红外光谱(IR)、热重分析(TG)以及差热分析(DSC)进行表征。实验表明:研磨法制得包合物的包得率较高(37%),但其包封率较低;UV分析表明包合物的结构不影响芘的最大紫外吸收波长λmax,但会影响其吸光度值;IR分析表明受包合物结构的影响,包合物中芘的特征峰会减弱、变宽或发生位移;TG及DSC分析表明,包合物的熔点及热稳定性高于芘,芘占据β-环糊精的空腔生成包合物,会导致水分子与β-环糊精腔内的结合作用减少。Pyrene and β -cyclodextrin inclusion compound were prepared by saturated aqueous solution method, ultrasonic method and grinding method, and were characterized by ultraviolet spectroscopy （ UV）, infrared spectroscopy （ IR）, thermal gravimetric analysis （TG） and differential thermal analysis （DSC）. The results showed： among these three methods of preparation, the inclusion efficiency of grinding method was higher（37% ） but the encapsulation efficiency was lower; through UV analysis, the structure of the inclusion compound had no effect on maximum UV absorption wavelength of pyrene （kmax）, but can affect the absorbance values ; through IR analysis, peaks of pyrene were weakened, widen or displaced by the influence of inclusion compound structure ; through TG and DSC analysis, the thermal stability of the inclusion compound was higher than pyrene, which was caused by the intracavitary combination reduction of hydrone and β - cyclodextrin.

关 键 词：芘 Β-环糊精 包合物 制备 表征 

分 类 号：X17[环境科学与工程—环境科学]