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HomeJournal of Nano ResearchJournal of Nano Research Vol. 48Preparation and Characterization of Polysiloxane...

Preparation and Characterization of Polysiloxane Modified Graphene Oxide/PMMA Nanocomposites with Non-Convalent Interfaces

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Abstract:

Graphene oxide (GO) was modified by polyphenylvinylsiloxane (PPVS) through π-π conjugation interaction. The modified GO/PMMA nanocomposites were prepared via in situ bulk polymerization. The modification of GO was characterized by using Fourier transformed infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Thermal conductivity, thermal stability and mechanical properties of PMMA and its composites were investigated by using TG, heat conduction analysis, and three-point bending strength test, respectively. The results showed that PPVS modified GO was prepared through non-covalent interaction, and composites with non-convalent phase interfaces were also obtained. With the addition of GO-PPVS, the three-point bending strength of GO-PPVS/PMMA increased to about 68 MPa. GO wrapped by PPVS could not form thermal conducting networks at the percolation thresholds. The increasing amount of PPVS prevented the formation of thermal conduction network, and decreased the thermal conductivity of the composites. The thermal stability of the composites was influenced by three main factors, and the total effect of the three factors on thermal stability illustrated a negative trend.

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Journal of Nano Research Vol. 48

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Journal of Nano Research (Volume 48)

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191-203

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https://doi.org/10.4028/www.scientific.net/JNanoR.48.191

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Online since:

July 2017

Authors:

Hong Yan Li, Li Meng Song, Ru Yi Li, Cong Sun, Yong Qiang Fu, Ai Wu Yang, Jian Guo Zhou, Hong Li Liu*

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Conjugation, Graphene Oxide, Interaction, PMMA

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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