光谱学与光谱分析 |
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Study on the Conversion of Acrylic CC Double Bonds during Dark Reaction after UV Curing Using Infrared Spectroscopy |
MA Guo-zhang1, 2,WU Jian-bing2,XU Bing-she1, 3 |
1. College of Materials Science and Engineering of Taiyuan University of Technology, Taiyuan 030024, China 2. Shanxi Institute of Applied Chemistry, Taiyuan 030027, China 3. Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China |
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Abstract Infrared spectroscopy was used to determine 1 648-1 589 cm-1 characteristic absorption peak area so as to study the conversation of acrylic CC double bonds after UV curing. The effects of phototinitiators, active diluents and UV curing resins on the conversion of CC double bonds were also investigated. The results showed that 40%-85% of CC double bonds were conversed during dark reaction after 45 s UV curing. Dark reaction will be changed gently after 1.75 h, but 95% conversion of CC double bonds needed more than 24 h. The rates of polymerization and conversation were affected by photoinitiators, the concentration of photoinitiator, oxygen inhibition, and CC functional groups of active diluents. The rate of polymerization was affected by the CC functional groups and types of UV curing resins, but conversation was not.
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Received: 2009-09-02
Accepted: 2009-12-03
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Corresponding Authors:
MA Guo-zhang
E-mail: maguozhang@hotmail.com
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