• Vol 1, No 1 (2010)
  • Chemical Engineering

Investigation The Nanostructural Evolution of TiO2–Polymethyl Methacrylate Nanocomposites

Akhmad Herman Yuwono, Yu Zhang, John Wang


Publish at : 01 Jul 2010 - 00:00
IJtech : IJtech Vol 1, No 1 (2010)
DOI : https://doi.org/10.14716/ijtech.v1i1.32

Cite this article as:
Yuwono, A.H.., & Zhang, Y..& Wang, J.. 2017. Investigation The Nanostructural Evolution of TiO2–Polymethyl Methacrylate Nanocomposites. International Journal of Technology. Volume 1(1), pp.11-19
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Akhmad Herman Yuwono Department of Metallurgy and Materials Engineering, Faculty of Engineering Universitas Indonesia, Depok 16424, Indonesia
Yu Zhang Department of Materials Science and Engineering, Faculty of Engineering National University of Singapore, Singapore 117574
John Wang Department of Materials Science and Engineering, Faculty of Engineering National University of Singapore, Singapore 117574
Email to Corresponding Author

Abstract

Nanocomposite thin films consisting of titanium oxide, or TiO2, nanoparticles embedded in a polymer matrix represent a new class of potential materials for optoelectronic applications such as optical switches, waveguides, high refractive indices and non-linear optical devices. Among the various processing techniques under development for these nanocomposites, the in situ sol-gel process is known to be versatile as it enables control of the inorganic-organic interaction at various molecular, nanometer, and micrometer scales. However, the sol-gel process has a major limitation, which is the low crystallinity in the resulting TiO2 phase due to relatively low processing temperatures. Therefore, the current research is aimed at investigating the nanostructural evolution of theTiO2 crystallite during the in situ sol-gel process to gain a better understanding of the mechanisms responsible for the largely amorphous nature of TiO2 nanoparticles. For this purpose, two sol-gel parameters, i.e., the hydrolysis ratio (Rw) and pH value of the TiO2 precursor solution were varied. On the basis of XRD and FTIR analyses, it was found that the largely amorphous TiO2 state is related to the fast development of stiff Ti-OH networks during the hydrolysis and condensation stages of the sol-gel process, and concurrently worsened by the formation of the rigid PMMA matrix upon thermal annealing.

Hydrolysis ratio; Inorganic-organic nanocomposites; pH; TiO2 nanostructural evolution

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