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A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization

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Abstract

A number of batch polymerizations were performed to study the effect of pristine nanoparticle loading on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization. In order to improve the dispersion of silica nanoparticles in PMMA matrix, the silanol groups of the silica are functionalized with methyl methacrylate groups and modified nanoparticles were used to synthesize PMMA/modified silica nanocomposites via RAFT polymerization. Prepared samples were characterized by thermogravimetric analysis (TGA), dynamic light scattering (DLS), dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and gel permeation chromatography (GPC). According to results, introduction of modified nanoparticles results in better thermal and mechanical properties than those of pristine nanoparticles. Also, surface modification and increasing silica nanoparticles result in variation of thermal degradation behavior of nanocomposites. The best improvement of mechanical and thermophysical properties is achieved for nanocomposites containing 7 wt. % silica nanoparticles.

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Authors and Affiliations

  1. Department of Polymer Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran

    Mehdi Salami-Kalajahi

  2. Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran

    Vahid Haddadi-Asl, Said Rahimi-Razin, Farid Behboodi-Sadabad & Hossein Roghani-Mamaqani

  3. Polymer Science and Technology Division, Research Institute of Petroleum Industry (RIPI), 1485733111, Tehran, Iran

    Mohammad Najafi

Authors
  1. Mehdi Salami-Kalajahi
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  2. Vahid Haddadi-Asl
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  3. Said Rahimi-Razin
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  4. Farid Behboodi-Sadabad
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  5. Mohammad Najafi
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  6. Hossein Roghani-Mamaqani
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Correspondence to Vahid Haddadi-Asl.

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Salami-Kalajahi, M., Haddadi-Asl, V., Rahimi-Razin, S. et al. A study on the properties of PMMA/silica nanocomposites prepared via RAFT polymerization. J Polym Res 19, 9793 (2012). https://doi.org/10.1007/s10965-011-9793-1

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  • DOI: https://doi.org/10.1007/s10965-011-9793-1

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