We present a systematic methodology to functionalize magnetic nanoparticles through surface-initiated atom-transfer radical polymerization (ATRP). The magnetite nanoparticles are prepared according to the method proposed by Sun et al. (2004), which leads to a monodisperse population of ~ 6 nm particles stabilized by oleic acid. The functionalization of the nanoparticles has been performed by tr...

Multicoated magnetite magnetic nanoparticles (MNP) with polyacrylic acid as a terminal hydrophilic ligand showed reproducibility of the composite particles when used draw solution. The tight covalent bond allows MNPs to maintain their osmotic potential after filtration.

In this work, novel superabsorbent composites made of starch-grafted-polyacrylic acid/coal gangue were prepared via aqueous solution polymerization. The starch-g-polyacrylic (St-g-PAA/CG) composite with 10 wt.% CG showed the maximum water absorbency in distilled (560 g·g −1 ) and a 0.9 NaCl (102 ). Moreover, exhibited fine thermal stability its swelling behavior was dependent on pH. general, ki...

Abstract Hydrogels had gained considerable importance in drug delivery systems. Polyacrylic acid/acrylamide (AAc/AAm) and polyacrylic doped with magnetite (AAc/AAm)Fe 3 O 4 hydrogels have been prepared by ɣ -radiations characterized Fourier transform infrared spectra (IR), X-ray diffractions (XRD), scanning electron microscope (SEM) transmittance (TEM). The morphology the particle size were det...

The aim of this study was to assess the influence of etching and light-curing time on the shear bond strength (SBS) and adhesive remnant index (ARI) of a resin-modified glass ionomer cement (RMGIC) upon debonding of orthodontic brackets. Sixty-eight bovine permanent incisors were obtained and embedded in acrylic resin. Edgewise metallic brackets were bonded to the teeth with Fuji Ortho LC RMGIC...