Liu Xiaozhen Sang Wenbin (Department of Chemical Engineering, Shanghai Institute of Technology, Shanghai 200235, China;School of Material Science and Engineering, Shanghai University, Shanghai 200436, China)
<正> Reactive bright blue rare earth dyestuffs were prepared by using reactive bright blue and lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, dysprosium oxide, erbium oxide, lutetium oxide, yttrium oxide respectively for dyeing silk cloth. The degree of dyeing of reactive bright blue praseodymium and the degree of fixation of reactive bright blue gadolinium are the biggest, and 22.9% and 7% are increased with that of reactive bright blue respectively. The spectra of reactive bright blue rare earth and reactive bright blue were studied by UV-VIS. In 200.00 -800.00 nm, reactive bright blue has four absorption peaks, reactive bright blue rare earth has three absorption peaks; in 420.00-760.00 nm, reactive bright blue has two absorption peaks at 661.50 nm and 625.50 nm, respectively, and λmax is 661.50 nm; reactive bright blue rare earth has one absorption peak at 620. 50, 618.00, 622.00, 623.00, 622.50, 619.50, 619.00, 621.00, 624.00, 620.00 nm adding La3+ , Pr3+, Nd3+, Sm3+ , Eu3+ , Gd3+ , Dy3+ , Er3+ , Lu3+ , Y3+ respectively.
reactive bright blue; UV-VIS absorption spectra; degree of dyeing; degree of fixation; rare earths
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