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Rheological Properties of Superparamagnetic Iron Oxide Nanoparticles
- Source :
- Журнал інженерних наук, Vol 8, Iss 1, Pp C29-C37 (2021)
- Publication Year :
- 2021
- Publisher :
- Sumy State University, 2021.
-
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.
- Subjects :
- surface charge
spions
02 engineering and technology
Engineering (General). Civil engineering (General)
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Physics::Fluid Dynamics
Condensed Matter::Soft Condensed Matter
SPIONs
mechanical engineering
rheology
TA1-2040
0210 nano-technology
nanomaterials
Subjects
Details
- ISSN :
- 24149381 and 23122498
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Journal of Engineering Sciences
- Accession number :
- edsair.doi.dedup.....e5ff0e4596946b954582804cb647c000