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Surface-initiated atom transfer radical polymerization of methyl methacrylate from magnetite nanopartictes at ambient temperature
Published in
2006
PMID: 17025118
Volume: 6
   
Issue: 7
Pages: 2018 - 2024
Abstract
The synthesis of methyl methacrylate (MMA) brush from the surface of magnetite nanoparticles (core-shell structure), from initiator moieties anchored covalently to the nanoparticles, via room temperature atom transfer radical polymerization (ATRP) is described. The surface-initiated polymerization was carried out from a surface-confined initiator containing a 2-bromoisobutyrate moiety with Cu(l)Br/PMDETA catalytic system. The initiator moiety was covalently anchored to the nanoparticles via a two step modification reaction scheme. Controlled polymerization was observed if ethyl-2-bromoisobutyrate (2-EiBrB) was added as a free/sacrificial initiator. A linear increase of molecular weight and a narrow molecular weight distribution of the PMMA formed in solution, provide evidence for a controlled surface-initiated polymerization, leading to surface-attached polymer brushes under mild conditions. The grafted PMMA provides good stability and dispersibility for the nanoparticles in organic solvents. Copyright © 2006 American Scientific Publishers All rights reserved.
About the journal
JournalJournal of Nanoscience and Nanotechnology
ISSN15334880
Open AccessNo
Concepts (33)
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    Core shell
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    Magnetite nanoparticles
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    Room temperature
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    SURFACE INITIATED POLYMERIZATION
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    INITIATORS (CHEMICAL)
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    Magnetite
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    Methanol
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    Polymerization
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    Synthesis (chemical)
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    Thermal effects
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    Nanostructured materials
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    Nanomaterial
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    Poly(methyl methacrylate)
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    Polymer
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    Article
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    Chemistry
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    Conformation
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    Crystallization
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    Macromolecule
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    Materials testing
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    Methodology
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    Nanotechnology
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    Particle size
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    Surface property
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    Temperature
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    Ultrastructure
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    Ferrosoferric oxide
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    Macromolecular substances
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    Molecular conformation
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    Nanostructures
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    Polymers
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    POLYMETHYL METHACRYLATE
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    Surface properties