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Title Rheological properties of superparamagnetic iron oxide nanoparticles
Authors Javanbakht, T.
Laurent, S.
Stanicki, D.
Salzmann, I.
Keywords rheology
SPIONs
nanomaterials
surface charge
mechanical engineering
Type Article
Date of Issue 2021
URI https://essuir.sumdu.edu.ua/handle/123456789/85352
Publisher Sumy State University
License Creative Commons Attribution - NonCommercial 4.0 International
Citation Javanbakht T., Laurent S., Stanicki D., Salzmann I. (2021).Rheological properties of superparamagnetic iron oxide nanoparticles. Journal of Engineering Sciences, Vol. 8(1), pp. C29–C37, doi: 10.21272/jes.2021.8(1).c4
Abstract The present study focuses on the rheological properties of polyethylene glycol (PEG) modified, positively charged, and negatively charged superparamagnetic iron oxide nanoparticles (SPIONs) at different temperatures. We hypothesized that the surface properties of these nanoparticles in the water did not affect their rheological properties. These nanoparticles had not the same surface properties as SPIONs-PEG had not to charge on their surface whereas positively charged and negatively charged ones with amine and carboxyl groups as their surfaces had positive and negative surface charges, respectively. However, their rheological behaviors were not different from each other. The comparative rheological study of SPIONs revealed their pseudo-Newtonian behavior. The viscosity of SPIONs decreased with the increase in temperature. At low shear rates, the shear stress of SPIONs was independent of rate and increased with the increase of rate. Moreover, at high shear rates, the shear stress for PEG-SPIONs was more than those for positively charged and negatively charged SPIONs. These measurements also revealed that at high shear rates, the shear stress of samples decreased with the increase of temperature. The shear stress of samples decreased with the increase of shear strain and the temperature. We also observed that all the samples had the same amount of shear strain at each shear stress, which indicated the exact resistance of SPIONs to deformation. Furthermore, the shear modulus decreased with time for these nanoparticles. These results suggest that these nanoparticles are promising candidates with appropriate properties for fluid processing applications and drug vectors in biomedical applications.
Appears in Collections: Journal of Engineering Sciences / Журнал інженерних наук

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