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Hydrophilic polymer/fumed silica hybrid nanoparticles synthesized via surface-initiated redox polymerization

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Abstract

Poly(acrylic acid) (PAA) and poly(methacrylic acid) (PMAA) chains were grafted onto the surface of functionalized fumed silica nanoparticles via a convenient surface-initiated redox polymerization method. Fumed silica nanoparticles (FSN) were first treated with 3-aminopropyltriethoxysilane (APTES) to form aminopropylated fumed silica nanoparticles (AFSN), followed by the surface-initiated redox polymerization of AA and MAA in the aqueous media stabilized by sodium dodecyl sulfate to synthesize PAA-g-FSN and PMAA-g-FSN hybrid nanomaterials. Cerium(IV) ammonium nitrate/aminopropyl group on the surfaces of AFSN was used as a redox initiation system. FT-IR and TGA results showed that PAA and PMAA chains are grafted on the FSN nanoparticles with a high grafting density, indicating successfully grafting of the AA and MAA onto the surface of fumed silica. Grafting amounts of the polymers onto the fumed silica nanoparticles surface were calculated from TGA thermograms to be 31.6 % and 52.7 % for the AA and MAA, respectively. DLS and SEM results showed average particle diameter less than 100 nm for the PAA-g-FSN and PMAA-g-FSN hybrid nanoparticles.

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Acknowledgment

The author, M. Abdollahi, would like to acknowledge Research Institute of Petroleum Industry (RIPI) and Iran Renewable Energy Initiative Council for the financial support of this work.

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  1. Morteza Rouhani

    Present address: Department of Chemistry, University of Zanjan, P O Box 45195-313, Zanjan, Iran

Authors and Affiliations

  1. Polymer Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box: 14115-114, Tehran, I.R, Iran

    Mahdi Abdollahi

  2. Division of Polymer Science and Technology, Research Institute of Petroleum Industry, P.O. Box: 18745-4163, Tehran, I.R, Iran

    Morteza Rouhani

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  1. Mahdi Abdollahi
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Correspondence to Mahdi Abdollahi.

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Abdollahi, M., Rouhani, M. Hydrophilic polymer/fumed silica hybrid nanoparticles synthesized via surface-initiated redox polymerization. J Polym Res 19, 5 (2012). https://doi.org/10.1007/s10965-012-0005-4

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