A new route of emulsifier-free emulsion polymerization for the preparation of polymer coated magnetite nanoparticles

• Autorzy: Nguyen Q H , Quyen D H , Hoang T K N

Identyfikatory

DOI

10.2478/s13536-013-0172-y

• Języki publikacji: EN

Abstrakty

EN

A new route of emulsifier-free emulsion polymerization based on the homogenous mechanism was investigated to prepare magnetic nanoparticles coated by poly (methyl methacrylate) (PMMA). The experimental results confirm the formation of PMMA thin and unique layers covering magnetite cores. The polymer layer thickness, determined from transmission electron microscopy (TEM) images, increases from 4.3 nm to 6.8 nm with increasing mass ratio of MMA to magnetite from 3:1 to 11:1. The increase of the polymer thickness results in the decrease in magnetization saturation of polymeric coated magnetic particles. However, this reduction, no more than 13 emu g􀀀1, is much lower compared to that in other studies with the presence of surfactants or emulsifiers. Besides, the dispersion stability of the prepared particles is significantly improved.

Słowa kluczowe

EN

magnetite; polymer coated nanoparticles; emulsifier-free emulsion polymerization

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2014
• Tom: Vol. 32, No. 2
• Strony: 264--271
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr., tab.

Twórcy

autor

Nguyen Q H

• School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam

autor

Quyen D H

• School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam

autor

Hoang T K N

• School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam

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