【摘要】 采用荧光光谱与紫外-可见光谱研究β-环糊精与工业染料酸性大红3R形成的包合体系.在包合体系最大吸收波长506 nm、最佳pH值5.0和最佳包合时间40 min条件下,根据Benesi-Hildebrand方程,测定计算出β-环糊精与酸性大红3R的包合比是21∶,包合常数是1.22×106 L2/mol2.考察了不同类型表面活性剂[十二烷基硫酸钠(SDS)、十二烷基苯磺酸钠(SDBS)、十六烷基三甲基溴化铵(CTAB)及平平加O]对包合体系光谱的影响,阴离子表面活性剂与非离子表面活性剂对包合体系的光谱无影响,而阳离子表面活性剂会改变其光谱特征.同时将SDS、SDBS和平平加O分别应用于酸性大红3R-β-环糊精染色体系中上染柞蚕丝,不匀率均下降.更多还原

【Abstract】 The inclusion system from β-cyclodextrin and the industrial dye acid scarlet red 3R was studied by fluorescence and ultraviolet-visible spectrum.Under the optimal inclusion conditions of pH 5 and reaction time 40 min,the inclusion ratio and inclusion constant of the complex of β-cyclodextrin and acid scarlet red 3R were estimated,according to Benesi-Hildebrand equation,to be 2∶1 and 1.22×106 L2/mol2,respectively,at the max absorption wavelength of 506 nm of the complex.The influence of the 4 surfactants(SDS,SDBS,CTAB and Peregal O) on the inclusion system spectra was also investigated.The anionic and non-ion surfactants had no effect on the system spectra,while catholic surfactants could change the spectrum characteristics.The unevenness ratios decreased when SDS,SDBS and Peregal O were separately used in the tussah dye system of β-cyclodextrin and acid scarlet red 3R.更多还原