Preparation and Characterization of PMMA Magnetic Nanocomposite

Abstract

-This work studies the effect of magnetic nanoparticles iron oxide (Fe3O4) on the rheological, physical, magnetic and thermal behavior of Poly(methyl methacrylate) PMMA magnetic nano solution and PMMA magnetic nano composite. Nanoparticles iron oxide (Fe3O4) where mixed with the PMMA solventm by ultrasonic device to produce MNPs polymer solution and the same MNPsblended with PMMA billets to prepare magnetic polymer composite by using twin screw extruder.Structure properties of Fe3O4 NPs , PMMA magnetic nano solution and PMMA magnetic nano composite were examined by using Atomic force microscopy (AFM). Magnetic properties for these solution and composite were measured using magnetic hysteresis circle. Electrical andthermal properties for MNPs polymer solution and MNPs PMMA composite were measured usingelectrical resistance device and KD2 respectively .In addation surface tension, density and pH for solutions was tested .While rheological properties was measured byCone and plate viscometer device. Additionally thermal behavior for MNPs The thermal behavior of MNPs PMMA composite showed a good agreement with the previous studies. The rheological test of this composite shows that the viscosity decreases and the shear stress increasing with the increase for all ratios. keywords:-MNPs,polymer ,nanosolution and composite,structure, flow and thermal behavior,magnetic Introduction Duringthe last decade, the development of magnetic nanocomposite materials has been the source of discovery of spectacular new phenomena, with potential applications in the multidimensional fields. Among the broad spectrum of nanoscalematerials being investigatedforvarious environmental and biomedicalapplicationsl,magnetic jnanoparticlesk (MNPs) have gainedsignificantattention due totheir intrinsicj magnetic properties, which makes the successfull as magnetically recoverable catalysts, drug delivery agents, anticancer materials, magnetic resonance imaging devices, etc. [1].nanofluids may be prepared either by one-stepp or two-stepo methodk. Inl the onel-stepl methodj nanoparticlesd aree synthesized in base fluid mainly by means of chemical methods or laser ablasion technique. In the case of two-step method nanoparticles are firsty prepared in a form ofpowders by physicalk orr chemicall methodsf, e.gp. grindingl, , ksol-gell processingk, etcc. andn thenn suspendedd inn basee fluidk [2,18]. Aferrofluidj isaj stable colloidal suspensionofl sub-domain magnetic particles in a liquid carrier.The particles, which have an averagesizeof about 1008A °, are coated with a stabiliising dispersing agentwhichj prevents particle agglomeration even when a strongmagneticc field gradient isj applied to theferrofluid [3].Magnetic polymer-basedh spheresj haveu been consideredd ass anm importantk materiall forjuthe biotechnologyo industryy, suchh asj, forr instancej, inkcelll separationand DNAextractionn . Inm particularr, mesoporoush polymerick templatesj couldj bee producedd ass micronsizedg beadsftthat allowk inn situy