| Summary: | 碩士 === 東海大學 === 化學工程與材料工程學系 === 101 === In recent years, nanoparticles were applied in biomedical researches. By means of the magnetic, optical, and electrical properties, nanoparticles were used for calibration, detection, and medical purposes. Magnetic nanoparticles of different shape, size, and form were synthesized by chemical methods.
In this research, the polystyrene (PS) templates were synthesized by deionized water, alcohol, styrene, sodium bicarbonate, potassium persulfate, and sodium styrene sulfonate (NaSS) for substrates. The PS templates were covered with poly(diallyldimethyl ammonium chloride) (PDADMAC) polymer layers and FePt in sequence. The prepared FePt/PDADMAC/PS particles of different sizes and were dispersed stably in the solvent.
The effects of molecular charge and pH of solution on the PS templates modified by PDADMAC were discussed. The properties of PS, PDADMAC/PS, and FePt/PDADMAC/PS particles were characterized by SEM, Zetasizer, and FTIR.
The results show that the size of PS template decreases as the NaSS molar ratio increases. The formations of modified PS and FePt/PDADMAC/PS particles were confirmed by Zetasizer and FTIR. The size of FePt/PDADMAC/PS particles decreases as the size of PS template decreases.
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