Magnetorheological behaviour and electrospinning of poly(ethylene oxide) suspensions with magnetic nanoparticles

Abstract

The properties of poly(ethylene oxide) aqueous suspensions with magnetic nanoparticles synthesized under microwaveassisted radiation are studied. The magnetic nanoparticles are formed by iron (III) chloride hexahydrate (FeCl 3 Á6H 2 O) dissolved in ethylene glycol (C 2 H 4 (OH) 2 ) and subsequently in aqueous ammonia solution (approx. 25 wt% aq.). The polymer suspension exhibits substantial advantages over a suspension when 'classical' carrier fluids (water and silicone oil) are used. First, the presence of poly(ethylene oxide) significantly contributes to a fabrication of nanofibrous webs, the morphology of which is documented by scanning electron microscopy technique. Second, better sedimentation stability of the processed suspension during electrospinning reflects in a uniform distribution of magnetic nanoparticles along the nanofibres, thus ensuring even magnetic performance of the resulting membranes.

A Brief Review of Preparation Method and Challenges of Magnetorheological Fluids

“…Unfortunately, the magnetisation saturation of the carbonyl iron decreased and hindered the induced chain. On the grounds of using the aqueous suspension, Peer et al [99] examined the stability of polyethylene oxide under microwave-assisted radiation. Their results showed the mixture stability is strengthened because the presence of polyethylene oxide promotes the formation of nanofibrous webs.…”

An investigation on polycaprolactone/chitosan/Fe3O4 nanofibrous composite used for hyperthermia

“…27 There are several studies on nanofibers mat loaded with magnetic nanoparticles. 25,[28][29][30] Matos et al produced composite membranes by an electrospun matrix of cellulose acetate functionalized with magnetic nanoparticles, which were applied by either surface adsorption or solution incorporation. 31 The aim of this work is to study polycaprolactone (PCL)/Cs/ Fe 3 O 4 nanofibers composites as an alternative for hyperthermia.…”

“…On the other hand, due to low solubility, poor cancer targeting, and leakage of free magnetic nanoparticles, electrospun nanofibers loaded with nanoparticles have gained attention as a novel strategy . There are several studies on nanofibers mat loaded with magnetic nanoparticles . Matos et al produced composite membranes by an electrospun matrix of cellulose acetate functionalized with magnetic nanoparticles, which were applied by either surface adsorption or solution incorporation …”

Controllability analysis and testing of a novel magnetorheological absorber for field gun recoil mitigation

“…Making use of the inherent capabilities of magnetorheological (MR) fluid, which can execute specific functions autonomously in response to changing external magnetic field [5,6], adaptive MR absorbers have also been applied in recoil systems for absorbing vibration and controlling recoil performance [7][8][9][10][11] and other shock engineering applications, such as seat suspension systems [12,13], military vehicles [14,15] and seismic isolation systems [16]. The MR absorber employs MR fluids that are suspensions of magnetically responsive particles in a carrier liquid.…”