| 光谱学与光谱分析 |
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| Study on the Ultraviolet Spectra of Diacetone Acrylamide |
| YE Yan-chun1,2,TAN Hui-min1,ZHANG Jun-liang2,GUO Yan-wen2 |
1. School of Material Science and Technology, Beijing Institute of Technology, Beijing 100081，China
2. School of Science, Beijing Institute of Technology, Beijing 100081，China |
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Abstract Diacetone acrylamide (DAAM) is an important monomer which can be copolymerized with other monomers, so the copolymers with different properties can be obtained. In the present paper, the ultraviolet spectra of diacetone acrylamide solutions in four different solvents (water, acetonitrile, methanol, cyclohexane) were studied, and it was found that there were two strong absorption peaks around 200 nm and 226 nm, respectively. The absorption peak around 200 nm was sensitive to the polarity of the solvent. The absorption shifted to the lower wavelength as the polarity of the solvent was increased, especially in water and acetonitrile. And the adsorption shifted to longer wavelength with the increase in the concentration. However, the other absorption peak at 226 nm remained basically stable when the concentration or the polarity of the solvent was changed. Obviously the absorption at 226 nm is reasonably considered as a characteristic peak of DAAM in the ultraviolet quantitative analysis. And the other absorption peak at 200 nm which is sensitive to the solvent and concentration can be taken to study the interactions between DAAM and solvent molecules. Also, the strength of the adsorption was affected by the polarity of the solvent.
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Received: 2006-11-28
Accepted: 2007-02-26
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Corresponding Authors:
YE Yan-chun
E-mail: ye_yanchun@sina.com
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