Rheology and colloidal structure of aqueous TiO2 nanoparticle suspensions

Tseng, Wenjea J.; Lin, Kuang-Chih

doi:10.1016/s0921-5093(03)00063-7

Cited by 310 publications

(99 citation statements)

References 22 publications

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“…Some researchers declared exceptional rise in viscosity with a rise in volume concentration. A detailed study can be found in references [29,47,48].…”

Section: Effect Of Volume Concentrationmentioning

confidence: 99%

A brief review on viscosity of nanofluids

et al. 2014

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Since the past decade, rapid development in nanotechnology has produced several aspects for the scientists and technologists to look into. Nanofluid is one of the incredible outcomes of such advancement. Nanofluids (colloidal suspensions of metallic and nonmetallic nanoparticles in conventional base fluids) are best known for their remarkable change to enhanced heat transfer abilities. Earlier research work has already acutely focused on thermal conductivity of nanofluids. However, viscosity is another important property that needs the same attention due to its very crucial impact on heat transfer. Therefore, viscosity of nanofluids should be thoroughly investigated before use for practical heat transfer applications. In this contribution, a brief review on theoretical models is presented precisely. Furthermore, the effects of nanoparticles' shape and size, temperature, volume concentration, pH, etc. are organized together and reviewed.

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“…Some researchers declared exceptional rise in viscosity with a rise in volume concentration. A detailed study can be found in references [29,47,48].…”

Section: Effect Of Volume Concentrationmentioning

confidence: 99%

A brief review on viscosity of nanofluids

et al. 2014

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“…It has been shown in many papers that, depending on the type of nanoparticles and the base fluid, some nanofluids can have a Newtonian [38][39][40][41][42][43] or non-Newtonian [44][45][46][47][48][49][50][51] nature. The mechanisms of these rheological properties are still not fully understood.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Properties of Boron Nitride-Ethylene Glycol (BN-EG) Nanofluids

Fal

Cholewa

Gizowska

et al. 2016

Journal of Elec Materi

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This paper presents the results of experimental investigation of the dielectric properties of ethylene glycol (EG) with various load of boron nitride (BN) nanoparticles. The nanofuids were prepared by using a two-step method on the basis of commercially available BN nanoparticles. The measurements were carried out using the Concept 80 System (NOVOCONTROL Technologies GmbH & Co. KG, Montabaur, Germany) in a frequency range from 10 Hz to 10 MHz and temperatures from 278.15 K to 328.15 K. The frequency-dependent real (e 0 ) and imaginary (e 00 ) parts of the complex permittivity (e Ã ) and the alternating current (AC) conductivity are presented. Also, the effect of temperature and mass concentrations on the dielectric properties of BN-EG nanofluids are demonstrated. The results show that the most significant increase can be achieved for 20 wt.% of BN nanoparticles at 283.15 K and 288.15 K, that is eleven times larger than in the case of pure EG.

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“…Other reported studies found non-Newtonian behavior of nanofluids. Tseng and Lin (2003) studied the suspension structure and the rheological behavior of Anatase titanium dioxide (TiO 2 ) nanoparticles dispersed in pure water with a range of volumetric concentrations. Their results revealed that the nanoparticle suspensions generally exhibited pseudo plastic flow behavior, indicating an existence of particle aggregations in the liquid medium.…”

Section: Introductionmentioning

confidence: 99%