Vortex fluidics synthesis of polymer coated superparamagnetic magnetite nanoparticles

Abstract

Polymer coated superparamagnetic magnetite nanoparticles with improved magnetic properties are accessible under continuous flow conditions within a vortex fluidic device.

Laser-Ablated Vortex Fluidic-Mediated Synthesis of Superparamagnetic Magnetite Nanoparticles in Water Under Flow

“…Polyvinyl pyrrolidine-coated superparamagnetic magnetite nanoparticles with a mean diameter of <10 nm have been previously fabricated using a coprecipitation method under continuous flow using a VFD with a 10 mm O.D. glass tube in an ammonia/nitrogen atmosphere . Herein, we have established that the VFD with a 20 mm O.D.…”

“…glass tube in an ammonia/nitrogen atmosphere. 23 Herein, we have established that the VFD with a 20 mm O.D. glass tube with higher volume capacity and safer laser ablation distance is effective in forming superparamagnetic magnetite nanoparticles with a narrow size distribution, as a one-step continuous flow process at ambient pressure.…”

Vortex fluidic mediated synthesis of polysulfone

“…The rate of water evaporation in the VFD is dramatically increased, due to the large surface area of the thin lm created inside the rapidly rotating VFD tube, and there is high heat and mass transfer, with improved reaction homogeneity, and when operating under continuous ow conditions, clogging is not an issue, unlike conventional channel based microuidics. 18 It has also been used in preparing polymeric nanoparticles, notably polyethylenimine (PEI) nanoparticles 19 and cross linked bovine serum albumin (BSA) with glutaraldehyde, 20 and polymer coated superparamagnetic magnetite nanoparticles, 21 as well as manipulating the orescent properties of hyper-branched polymers. 22 The benets of shear stress in the dynamic thin lm in the VFD has not been explored for preparing PSF.…”