Transparent poly(methyl methacrylate)/TiO2 nanocomposites for UV-shielding applications |
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| Authors: | Xiangfu Meng Zhiwei Zhang Nan Luo Shengli Cao Mingshu Yang |
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| Affiliation: | 1.Department of Chemistry,Capital Normal University,Beijing,China;2.Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry,Chinese Academy of Sciences,Beijing,China |
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| Abstract: | Transparent poly(methyl methacrylate) (PMMA)/TiO2 nanocomposites have been prepared by solution mixing PMMA with organically soluble titania xerogel. The organically soluble titania xerogel in the form of amorphous phase has been synthesized via a simple sol-gel method, involving hydrolysis of tetrabutyl titanate (TBT) in trifluoroacetic acid (TFA) and gelation. The obtained PMMA/TiO2 nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), thermogravimetry (TG) and ultraviolet-visible (UV-vis) absorption spectroscopy. The results showed that the interaction between titania nanoparticles and PMMA macromolecular chains led to a homogeneous dispersion of TiO2 in PMMA matrix. The resulting PMMA/TiO2 nanocomposites showed improved thermal stability, high transparency and high UV-shielding efficiency with a small amount of titania xerogel (≤3.0 wt %). The present work is of interest for developing a series of transparent UV-shielding nanocomposites. |
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