Citation: Xian Hai Hu, Xing Yuan Zhang, Jia Bin Dai. Synthesis and characterization of a novel waterborne stilbene-based polyurethane fluorescent brightener[J]. Chinese Chemical Letters, ;2011, 22(8): 997-1000. doi: 10.1016/j.cclet.2011.01.028 shu

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

a CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China;
b School of Materials and Chemical Engineering, Anhui Institute of Architecture and Industry, Hefei 230022, China

Received Date: 9 September 2010

Fund Project: Financial supports from the National Natural Science Foundation of China (No. 51073144) and Anhui Provincial Education Department (Nos. KJ2008B165 and KJ2010B039) are acknowledged.

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-y1)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 2.1×10⁴, 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.
- Waterborne polyurethane,
- Fluorescent brightener,
- VBL,
- Fluorescence
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