绿色合成法制备聚氨酯/纳米二氧化钛杂化复合材料及其荧光性能初探  

Green Synthesis of Hybrid Material of Polyurethane/TiO_2 Composite and a Preliminary Study on Its Fluorescence Property

作　　者：王珊[1] 黄怡[1] 杨亚婷[1] 

机构地区：[1]咸阳师范学院化学系,咸阳712000

出　　处：《理化检验（化学分册）》2010年第4期411-414,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：陕西省教育厅专项科研计划资助项目(08JK482);咸阳师范学院专项基金(08XSYK109)

摘　　要：采用无毒、无害的绿色方法合成聚氨酯,通过原位复合法制备出一种新型的聚氨酯/纳米二氧化钛杂化复合材料。利用傅里叶变换红外光谱分析(FTIR)、差示扫描量热分析方法(DSC)分别对聚氨酯/纳米二氧化钛杂化前后的结构进行表征。通过循环伏安法检测表明此杂化复合材料有良好的电化学稳定性及可逆性。采用荧光技术对聚氨酯/纳米二氧化钛杂化复合材料的性能进行研究。试验结果表明:当纳米二氧化钛与聚氨酯的质量比为100:7,超声时间为5 min时,得到的聚氨酯/纳米二氧化钛杂化复合材料的性能最好。Polyurethane（PUTN） was synthesized by a non-poisonous and non-harmful method and the hybrid composite material of PUTN/TiO_2 was prepared by mixing the solution of PUTN in tetrahydrofuran with nanoparticles of TiO_2 dispersed homogeneously in absolute alcohol.The intermolecular structure of the new composite material was characterized by FTIRS and differential scanning calorimetry before and after the hybridization.Good electrochemical stability and reversibility of the new composite material were shown by the results of cyclic voltammetric study.It was found that the maximum emission wavelength of PUTN/TiO2 composite material lies at 404 nm which is same as that of the nanotitanium oxide.Effects of size of the nanoparticles of TiO2 and its mass fraction in the composite and time of ultrasonic vibration in mixing the 2 components on the fluorescence property were studied in detail.As shown by experimental results,best functional property of this new composite material was attained when the mass ratio of nanotitanium oxide to polyrethane used was 100 to 7,and the time of ultrasonic vibration taken was 5 min.In addition,the fluorescence property of the PUTN/TiO2 membrane as affected by using different solvents was also studied.

关 键 词：杂化复合材料 聚氨酯 纳米二氧化钛 荧光性能 

分 类 号：O657.33[理学—分析化学]