Synthesis and characterization of a novel waterborne stilbene-based polyurethane fluorescent brightener  

作　　者：Xian Hai Hu Xing Yuan Zhang Jia Bin Dai 

机构地区：[1]CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China [2]School of Materials and Chemical Engineering, Anhui Institute of Architecture and Industry, Hefei 230022, China

出　　处：《Chinese Chemical Letters》2011年第8期997-1000,共4页中国化学快报（英文版）

基　　金：Financial supports from the National Natural Science Foundation of China(No.51073144);Anhui Provincial Education Department(Nos.KJ2008B165 and KJ2010B039)

摘　　要：A novel waterborne stilbene-based polyurethane fluorescent brightener dispersion WPU-VBL was synthesized by incorporating chemically disodium 4,4＇-bis[（4-anilino-6-hydroxyethylamino-1,3,5-triazin-2-yl）amino]stilbene-2,2＇-disulphonate（VBL） into the polyurethane chain using isophorone diisocyanate,poly（propylene glycol） and 2,2-dimethylol propionic acid.The structure of WPU-VBL was confirmed by means of Fourier transform infrared spectroscopy.The UV-vis absorption analysis showed a hypsochromic shift of 16 nm when VBL was blocked into polyurethane chain.Number average molecular weight of 2.1×10~4, molecular weight distribution of 2.1 and average latex particle size of about 70 nm for WPU-VBL were determined based on the analysis of gel permeation chromatography and laser particle size analyzer.It was found that the fluorescence intensity of WPU-VBL was prominently enhanced because of the micro-circumstance of VBL and the fluorescence of WPU-VBL was very stable.A novel waterborne stilbene-based polyurethane fluorescent brightener dispersion WPU-VBL was synthesized by incorporating chemically disodium 4,4＇-bis[（4-anilino-6-hydroxyethylamino-1,3,5-triazin-2-yl）amino]stilbene-2,2＇-disulphonate（VBL） into the polyurethane chain using isophorone diisocyanate,poly（propylene glycol） and 2,2-dimethylol propionic acid.The structure of WPU-VBL was confirmed by means of Fourier transform infrared spectroscopy.The UV-vis absorption analysis showed a hypsochromic shift of 16 nm when VBL was blocked into polyurethane chain.Number average molecular weight of 2.1×10~4, molecular weight distribution of 2.1 and average latex particle size of about 70 nm for WPU-VBL were determined based on the analysis of gel permeation chromatography and laser particle size analyzer.It was found that the fluorescence intensity of WPU-VBL was prominently enhanced because of the micro-circumstance of VBL and the fluorescence of WPU-VBL was very stable.

关 键 词：Waterborne polyurethane Fluorescent brightener VBL FLUORESCENCE 

分 类 号：TQ649.4[化学工程—精细化工] TQ610.495