In situ solvothermal synthesis and characterization of transparent epoxy/TiO2 nanocomposites |
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| Authors: | Haiying Zhang Rongrong Qi Mingkang Tong Yaozhen Su Mark Huang |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China;3. Institute of Microelectronics, A*STAR, Singapore 117685, Singapore |
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| Abstract: | A solvothermal process was developed to in situ prepare epoxy (EP)/TiO2 hybrid precursors. The chemical structure of samples was confirmed by X-ray and Fourier transformed infrared spectroscopy. Field emission scanning electron microscope micrographs of cured EP/TiO2 hybrid composites showed that well-dispersed TiO2 nanoparticles were successfully in situ formed in epoxy matrix through the solvothermal process. The thermogravimetic analysis, DSC, and gel content measurements showed that EP/TiO2 hybrid precursors were fully cured with the glass transition temperature decreasing gradually. The effect of TiO2 contents on optical and surface properties was investigated in detail. The results indicated that epoxy/TiO2 nanocomposites exhibited excellent UV shielding effect and high visible light transparency. The contact angle of EP/TiO2 nanocomposites, when the content of silane-coupling agent (KH560) was 5 g and the content of tetrabutyl titanate (TBT) was 3 g, can reach as high as 101°, which was 36° higher than that of pure EP, representing for the increase of hydrophobicity. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | epoxy resin TiO2 nanoparticles in situ solvothermal process |
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