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Title: Breakup of nanoparticle clusters using microfluidizerM110-P
Authors: Gavi, Emmanuela
Kubicki, Dominik
Padron, Gustavo A.
Ozcan-Taskin, N. Gul
Keywords: Microfluidizer M110-P
Dispersion of nanoparticles
Breakup
Fragmentation
Deagglomeration
Issue Date: 2018
Publisher: Elsevier © Institution of Chemical Engineers
Citation: GAVI, E. ...et al., 2018. Breakup of nanoparticle clusters using microfluidizerM110-P. Chemical Engineering Research and Design, 132, pp.902-912.
Abstract: A commercial design, bench scale microfluidic processor, Microfluidics M110-P, was used to study the deagglomeration of clusters of nanosized silica particles. Breakup kinetics, mechanisms and the smallest attainable size were determined over a range of particle concentrations of up to 17% wt. in water and liquid viscosities of up to 0.09 Pa s at 1% wt. particle concentration. The device was found to be effective in achieving complete breakup of agglomerates into submicron size aggregates of around 150 nm over the range covered. A single pass was sufficient to achieve this at a low particle concentration and liquid viscosity. As the particle concentration or continuous phase viscosity was increased, either a higher number of passes or a higher power input (for the same number of passes) was required to obtain a dispersion with a size distribution in the submicron range. Breakup took place through erosion resulting in a dispersion of a given mean diameter range regardless of the operating condition. This is in line with results obtained using rotor-stators. Breakup kinetics compared on the basis of energy density indicated that whilst Microfluidizer M110-P and an in-line rotor-stator equipped with the emulsor screen are of similar performance at a viscosity of 0.01 Pa s, fines volume fraction achieved with the Microfluidizer was much higher at a viscosity of 0.09 Pa s.
Description: This paper is in closed access until 2 February 2019.
Sponsor: The authors gratefully acknowledge the financial and technical contributions of the industrial members of the DOMINO consortium.
Version: Accepted for publication
DOI: 10.1016/j.cherd.2018.01.011
URI: https://dspace.lboro.ac.uk/2134/28360
Publisher Link: https://doi.org/10.1016/j.cherd.2018.01.011
ISSN: 1744-3563
Appears in Collections:Closed Access (Chemical Engineering)

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