Preparation of narrow or mono-disperse crosslinked poly((meth)acrylic acid)/iron oxide magnetic microspheres

Huang, Junsheng; Wan, Shourong; Guo, Miao; Yan, Husheng

doi:10.1039/b609088e

Cited by 38 publications

(25 citation statements)

References 33 publications

(32 reference statements)

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“…A similar result has been observed in the preparation of polymer/Fe 3 O 4 magnetic microspheres. 28 When the temperature reached 850 C, the weight of the hybrid remained at 41.1 wt% and almost no weight loss occurred after this temperature.…”

Section: Characterizationmentioning

confidence: 97%

Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers

et al. 2009

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A superparamagnetic graphene oxide -Fe 3 O 4 nanoparticles hybrid (GO-Fe 3 O 4 ) was prepared via a simple and effective chemical precipitation method. The amount of loading of Fe 3 O 4 on GO was estimated as 18.6 wt% by atomic absorption spectrometry. The hybrid was then loaded with doxorubicin hydrochloride (DXR) and the loading capacity was as high as 1.08 mg mg À1 . Both of the GO-Fe 3 O 4 hybrids before and after loading with DXR can be dispersed well in aqueous solution. They can congregate under acidic conditions and move regularly under the force of an external magnet. Furthermore, the aggregated hybrid can be redispersed to form a stable suspension under basic conditions. These properties make it a potential candidate for controlled targeted drug delivery and release.

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Section: Characterizationmentioning

confidence: 97%

Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers

et al. 2009

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“…The C layer was synthesized via free radical polymerization under ultraviolet (UV) irradiation [ 12 , 13 ] as shown in Figure 1 . For this, the mixture of AA, DVB, BIE, and AIBN with the molar ratio of 2 (7.28 g), 1 (6.58 g), 0.1 (0.84 g), and 0.1 (1.43 g) was stirred in a three-neck flask containing a reflux condenser under nitrogen atmosphere at 60 °C for 10 h to activate the radical initiators.…”

Section: Methodsmentioning

confidence: 99%

Design of Electrochemically Effective Double-Layered Cation Exchange Membranes for Saline Water Electrolysis

Park

Lee

2020

Polymers

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Saline water electrolysis (SWE) is an electrochemical process to simultaneously produce hydrogen (H2), chlorine (Cl2), and sodium hydroxide (NaOH) with high purity levels (e.g., 99.999%) by applying electric power to saline water. The state-of-the art SWE membrane, Flemion®, has excellent chemical resistance to harsh SWE conditions, but still needs to lower its energy consumption by reducing its ohmic resistance to Na+ ion transport. Meanwhile, most of cation exchange membranes (CEMs) have been suffering from chemical degradation under the alkaline conditions, owing to their single layer matrices composed of sulfonic acid moieties, though they show fast Na+ ion transport behavior. Here double-layered SWE membranes were prepared on the basis of design strategies composed of the incorporation of a chemically stable carboxylic acid layer (C layer) via UV irradiation onto one surface of perfluorinated Nafion®212 membrane chosen as one of commercially available CEMs, and the thickness control of the C layer. The resulting membranes showed excellent SWE performances and improved electrochemical service life, when compared with those of Nafion®212 and Flemion®, respectively.

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“…[22,27] Briefly, the precursor particles, monodisperse magnetic microspheres were produced by deposition of Fe 3 O 4 nanoparticles within crosslinked poly(acrylic acid) microspheres prepared by distillation-precipitation copolymerization. The approximate diameter of the resulting magnetic microspheres (denoted as Fe 3 O 4 /PAA) was determined by scanning electron microscopy (SEM) to be 520 nm.…”

Section: Preparation Of Initiator Microspheresmentioning

confidence: 99%

Immobilization of Penicillin G Acylase on Poly[(glycidyl methacrylate)‐co‐(glycerol monomethacrylate)]‐Grafted Magnetic Microspheres

Huang

Zheng

et al. 2008

Macromolecular Bioscience

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Poly[(glycidyl methacrylate)-co-(glycerol monomethacrylate)]-grafted magnetic microspheres were prepared by graft random copolymerization via ATRP from polymer microspheres with dispersed Fe(3)O(4) nanoparticles. Penicillin G acylase (PGA) was immobilized onto the polymer brush-grafted magnetic microspheres. The immobilized PGA prepared with initial glycidyl methacrylate/glycerol monomethacrylate ratios of 40/60 to 60/40 possessed higher catalytic activity than that prepared with higher proportions of glycidyl methacrylate in the initial monomer mixture. The immobilized PGA showed high thermal stability and enhanced tolerability to the pH variance.

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Preparation of narrow or mono-disperse crosslinked poly((meth)acrylic acid)/iron oxide magnetic microspheres

Cited by 38 publications

References 33 publications

Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers

Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers

Design of Electrochemically Effective Double-Layered Cation Exchange Membranes for Saline Water Electrolysis

Immobilization of Penicillin G Acylase on Poly[(glycidyl methacrylate)‐co‐(glycerol monomethacrylate)]‐Grafted Magnetic Microspheres

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