Abstract
Poly (ionic liquid)/TiO2 composite particles were fabricated using a facile one-pot synthesis method, in which the polymerization of the ionic liquid monomer and hydrolysis of the precursor for TiO2 proceeded in one system. The morphological properties of the composite particles were observed by a scanning electron microscope and transmission electron microscope. The chemical and physical structures of the particles were analyzed by a Fourier infrared spectrometer and an X-ray diffractometer, respectively. It was found that in the composite particles, poly (ionic liquid) (PIL) spheres are embedded in the continuous TiO2 phase, forming larger nonspherical particles of ∼10 microns. The rheological properties of PIL and the PIL/TiO2 composite particles dispersed in silicone oil were measured by a rotational rheometer with a high-power supply. At the same electric field, the PIL/TiO2 particles showed higher shear stress and elastic modulus than pure PIL particles at the same electric field. In addition, compared with pure PIL particles, the PIL/TiO2 particles work at higher temperatures, up to 100°C.
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