Synthesis and Characterization of Novel UV-curable Fluorinated Polyurethane-acrylate Copolymer

doi:10.1007/s40242-016-5272-x

Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (2): 311-317.doi: 10.1007/s40242-016-5272-x

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Synthesis and Characterization of Novel UV-curable Fluorinated Polyurethane-acrylate Copolymer

WANG Honglei^1,2,3, LIU Weiqu^1,2, TAN Jianquan^1,2,3, XIAHOU Guolun^1,2,3

1. Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, P. R. China;
2. Key Laboratory of Cellulose and Lignocellulosics Chemistry, Chinese Academy of Sciences, Guangzhou 510650, P. R. China;
3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China

Received:2015-07-14 Revised:2015-12-29 Online:2016-04-01 Published:2016-02-06
Contact: LIU Weiqu E-mail:liuwq@gic.ac.cn
Supported by:
Supported by the the Science and Technology Program of Guangzhou City, China(No.2014J4100215), the Natural Science Foundation of Guangdong Province, China(No.S2013010012106) and the Project of the Key Laboratory of Cellulose and Lignocellulosics, Guangzhou Institute of Chemistry, Chinese Academy of Sciences.

Abstract

Abstract:

A series of UV-curable fluorinated polyurethane-acrylate(PUA) has been developed by incorporating octafluoropentyl alcohol into the segment of UV-curable polyurethane-acrylate to improve the thermal property and surface property of the copolymer material. The structures of the synthesized polymers were characterized by Fourier transform infrared(FTIR) spectrometry. In order to find out the effect of incorporated fluorine on the UV-cured films, the properties of the UV-cured films were tested through contact angle, water absorption, and thermogravimetric analysis (TGA). The fractured-surface morphologies of the UV-cured coatings were investigated by scanning electron microscopy(SEM). With increasing the content of fluorine segments, the contact angle of the UV-cured films increased and the water absorption decreased, suggesting the fluorine segments migrated and formed a fluorine-covered surface to avoid water penetration. The observation of the fractured-surface morphology through SEM test showed that the fluorinated UV-cured films gained rough fractured-surface compared with the pure UV-cured polyacrylate film, demonstrating the migrating of the fluorine segments. The TGA curves show that the fluorinated UV-cured films gained higher thermal degradation temperature than the virgin UV-cured polyacrylate film. And as increasing the fluorine content, the thermal degradation temperature increased. These phenomena could be reasonably explained by the enrichment of fluorinecontained segment on the surface of the film and the high thermal property due to fluorine atom.

Key words: Fluorinated polyurethane, Functional acrylate oligomer, UV-cured film, Hydrophobic surface

WANG Honglei, LIU Weiqu, TAN Jianquan, XIAHOU Guolun. Synthesis and Characterization of Novel UV-curable Fluorinated Polyurethane-acrylate Copolymer[J]. Chemical Research in Chinese Universities, 2016, 32(2): 311-317.

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Synthesis and Characterization of Novel UV-curable Fluorinated Polyurethane-acrylate Copolymer

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