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Erschienen in: Journal of Materials Science 16/2014

01.08.2014

Thermally induced structural evolution of methylsilicone xerogel monoliths reinforced by titania nanoparticles

verfasst von: Huifang Xu, Li Liu, Haijiao Zhang, Qiuyang Chen, Wei Dong, Yudong Huang, Haifeng Guo

Erschienen in: Journal of Materials Science | Ausgabe 16/2014

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Abstract

Thermally stable methylsilicone xerogel monoliths were prepared by sol–gel technology with methylsilicone oligomer as precursor and titania nanoparticles as filler. The effects of titania doping and heating temperature on the structure, morphology, and hydrophobic property of xerogels were investigated. The structural evolution under thermal treatment showed that the blank methylsilicone monolith was crushed after 300 °C treatment, but the samples reinforced by titania could retain the intact structure after 500 °C treatment. Thermogravimetric analysis results certified that the thermal degradation of methylsilicone was resisted due to incorporation of TiO2. Fourier transform infrared spectra and 29Si nuclear magnetic resonance results showed that Si–CH3 unit still existed in the reinforced samples, compared with the complete transformation of Si–C to Si–O in the blank methylsilicone after 500 °C treatment. Thus, the hydrophobic property was preserved and certified by measurement of contact angle.

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Metadaten
Titel
Thermally induced structural evolution of methylsilicone xerogel monoliths reinforced by titania nanoparticles
verfasst von
Huifang Xu
Li Liu
Haijiao Zhang
Qiuyang Chen
Wei Dong
Yudong Huang
Haifeng Guo
Publikationsdatum
01.08.2014
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 16/2014
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8295-z

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