Comparative study in magnetic composites with PMMA and PS matrices made by suspension polymerization

Karagiovanaki, S; Efthimiadis, K; Zoumpoulakis, L

dc.contributor.author	Karagiovanaki, S	en
dc.contributor.author	Efthimiadis, K	en
dc.contributor.author	Zoumpoulakis, L	en
dc.date.accessioned	2014-03-01T02:47:31Z
dc.date.available	2014-03-01T02:47:31Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33196
dc.subject	Magnetic polymer microspheres	en
dc.subject	Magnetic sensors	en
dc.subject	Magnetite composites	en
dc.subject	Suspension polymerization	en
dc.subject.other	Comparative studies	en
dc.subject.other	FTIR	en
dc.subject.other	Magnetic behavior	en
dc.subject.other	Magnetic composites	en
dc.subject.other	Magnetic polymer microsphere	en
dc.subject.other	Magnetic polymers	en
dc.subject.other	Magnetic powders	en
dc.subject.other	Magnetization measurements	en
dc.subject.other	Nano-Fe	en
dc.subject.other	Polymer magnetic microspheres	en
dc.subject.other	Polymer products	en
dc.subject.other	Sensing applications	en
dc.subject.other	Suspension polymerization	en
dc.subject.other	Vibrating sample magnetometer	en
dc.subject.other	XRD	en
dc.subject.other	Acrylic monomers	en
dc.subject.other	Esters	en
dc.subject.other	Fourier transform infrared spectroscopy	en
dc.subject.other	Magnetic bubbles	en
dc.subject.other	Magnetic sensors	en
dc.subject.other	Magnetism	en
dc.subject.other	Magnetite	en
dc.subject.other	Microspheres	en
dc.subject.other	Nanosensors	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Polymerization	en
dc.subject.other	Polymers	en
dc.subject.other	Polystyrenes	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Styrene	en
dc.subject.other	X ray powder diffraction	en
dc.subject.other	Suspensions (components)	en
dc.title	Comparative study in magnetic composites with PMMA and PS matrices made by suspension polymerization	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	Magnetic polymer composites were synthesized via suspension polymerization method, incorporating nano-Fe3O4 powder into poly(methyl methacrylate) (PMMA) and polystyrene (PS) matrices in order to obtain polymer magnetic microspheres with perspectives in sensing applications. The monomer (MMA or Styrene) and the magnetic powder (pre-made Fe3O4, 20nm in diameter) are mixed together under vigorous stirring and follows suspension polymerization. The product was sequentially filtered through a range of sieves and spherical composites were obtained with grains of sizes ranging from 45μm to 250μm. The yield of polymerization was 60% to 85% for the two different matrices in samples and the corresponding polymer product contained 1.25wt% to 4.00wt% of Fe3O4. It is observed that increasing the content of magnetite affect the surface morphology of the microspheres and their magnetic behavior. The pure nano-Fe3O 4 powder and the magnetic polymer microspheres were characterized using techniques such as X-Ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), optical microscopy and magnetization measurements carried out by a Vibrating Sample Magnetometer (VSM). © (2012) Trans Tech Publications.	en
heal.journalName	Key Engineering Materials	en