Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites | Zendy

Diego Antonioli | Zendy; Michele Laus | Zendy; Giampaolo Zuccheri | Zendy; Valerj Kapeliouchko | Zendy; Maria Cristina Righetti | Zendy; Luca Boarino | Zendy; Katia Sparnacci | Zendy

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Preparation and Properties of PTFE-PMMA Core-Shell Nanoparticles and Nanocomposites

Author(s) -

Diego Antonioli,

Michele Laus,

Giampaolo Zuccheri,

Valerj Kapeliouchko,

Maria Cristina Righetti,

Luca Boarino,

Katia Sparnacci

Publication year - 2012

Publication title -

journal of nanotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.347

H-Index - 29

eISSN - 1687-9511

pISSN - 1687-9503

DOI - 10.1155/2012/875815

Subject(s) - materials science , nanocomposite , polytetrafluoroethylene , emulsion polymerization , composite material , methyl methacrylate , nanometre , nanoparticle , polymer , annealing (glass) , particle size , poly(methyl methacrylate) , particle (ecology) , polymerization , shell (structure) , chemical engineering , nanotechnology , oceanography , geology , engineering

The preparation of polytetrafluoroethylene-poly(methyl methacrylate) (PTFE-PMMA) core-shell particles was described, featuring controlled size and narrow size distribution over a wide compositional range, through a seeded emulsion polymerization starting from a PTFE seed of 26 nanometers. Over the entire MMA/PTFE range, the particle size increases as the MMA/PTFE ratio increases. A very precise control over the particle size can be exerted by properly adjusting the ratio between the monomer and the PTFE seed. Particles in the 80–240 nm range can be prepared with uniformity indexes suited to build 2D and 3D colloidal crystals. These core-shell particles were employed to prepare nanocomposites with different compositions, through an annealing procedure at a temperature higher than the glass transition temperature of the shell forming polymer. A perfect dispersion of the PTFE particles within the PMMA matrix was obtained and optically transparent nanocomposites were prepared containing a very high PTFE amount

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