Magnetophoretic Migration Of Magnetic Nanoparticles Through Cellulose Matrix
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Date
2021-06-01
Authors
Mohd Salleh, Muhammad Sufian
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Abstract
The migration of magnetic nanoparticles (MNPs) through cellulose matrix has
been presented in this thesis. The experiment was carried out to study the influence of
colloidal stability, aggregation of MNPs, concentration, the pore size of the cellulose
matrix, and strength of magnetic field on the magnetophoresis of MNPs through the
complex structure of cellulose. Magnetite, Fe3O4 were used as the MNPs to study the
magnetophoresis under an Optical microscope. All the captured images of the
magnetophoretic phenomena were analysed by using NIH ImageJ. A simple setup of
the experiment was done by placing a magnet 2 cm away from the initial point of
MNPs was injected on the Whatman chromatography paper. Based on the experiments
conducted, 100 mg/L of poly (sodium (4) styrene sulfonate) polyelectrolyte (PSS)
coated MNPs were able to migrate through grade 4 paper after 30 and 60 s of
magnetophoresis with 0.007492 % and 0.0162 % of the area covered at 2 cm,
respectively. As for naked MNPs with the same conditions, the area covered after 30
and 60 s is 0 and 0.00133 % respectively. It was found that the area covered for the
magnetophoretic motion of MNPs through grade 5 paper was lower than grade 4 paper,
whereas at 1.5 and 2 cm the area covered is 0.00245 % and 0.00294 % respectively.
Besides, a higher concentration of MNPs solution will limit the magnetophoresis of
MNPs through the matrix due to the formation of aggregation that inhibits the motion
of the particles from passing through the pore of the cellulose matrix.