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Preparation and characterization of polystyrene grafted magnesium hydroxide nanoparticles via surface-initiated atom transfer radical polymerization

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Abstract

Polystyrene grafted magnesium hydroxide nanoparticles [PS–Mg(OH)2] were prepared by the followed two steps: first magnesium hydroxide nanoneedles modified by α-bromoisobutyric acid [BA–Mg(OH)2] were synthesized through injecting alkaline into magnesium chloride solution; then polystyrene grafted magnesium hydroxide particles [PS–Mg(OH)2] were successfully prepared by the surface-initiated atom transfer radical polymerization (SI-ATRP) of styrene from the macroinitiators, BA–Mg(OH)2, in toluene system with the catalysts of 2,2′-bipyridine and Cu(I)Br. The obtained PS–Fe3O4 nanoparticles were characterized by Fourier transform infrared spectroscopy (FT-IR), elemental analysis (EA), transmission electron microscope (TEM), sedimentation test, and viscosity test. The FT-IR analyses showed that the polystyrene had been covalently grafted onto the surfaces of the nanoneedles [BA–Mg(OH)2]. The graft polymerizations exhibited the characteristics of the controlled/“living” polymerization. TEM showed that grafted polymer chains on nanoparticles could prevent the aggregation of PS–Mg(OH)2 nanoparticles markedly in toluene and improve their compatibility with organic phase. The graft parameters could be calculated from the elemental analysis (EA) results, and linear plots of percentage of grafting (PG %) and conversion of monomer (C %) versus polymerizing time were achieved, respectively. Narrow molecular weight distribution (M w/M n) for the graft polymer samples were characterized by the gel permeation chromatography (GPC).

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  1. Zhixing Su

    Present address: Lanzhou University, Tianshui Road 222, Lanzhou, 730000, China

Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China

    Fangzhi Zhang, Zhixing Su & Hong Zhang

  2. Institute of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an, China

    Xiping Lei

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  1. Fangzhi Zhang
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  2. Xiping Lei
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  4. Hong Zhang
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Correspondence to Zhixing Su.

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Zhang, F., Lei, X., Su, Z. et al. Preparation and characterization of polystyrene grafted magnesium hydroxide nanoparticles via surface-initiated atom transfer radical polymerization. J Polym Res 15, 319–323 (2008). https://doi.org/10.1007/s10965-007-9173-z

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  • DOI: https://doi.org/10.1007/s10965-007-9173-z

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