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  1. No Access

    Article

    Self-confined polymer dynamics in miscible binary blends

    The segmental dynamics of PVME within the single-phase state of poly(styrene)/poly(vinyl methyl ether) blends (PS/PVME) was examined by dielectric spectroscopy. A particular attention has been given to the hig...

    C. Lorthioir, A. Alegría, J. Colmenero in The European Physical Journal E (2003)

  2. No Access

    Article

    Segmental order and dynamics of polymer chains confined in block copolymer lamellar mesophases: NMR and dielectric relaxation studies

    The PDMS lamellar sublayers of a poly(styrene)-poly(dimethylsiloxane) diblock (PS-PDMS) and PS-PDMS-PS triblocks are investigated by NMR and dielectric spectroscopy. Some segments of the confined PDMS chains d...

    C. Lorthioir, B. Deloche, A. Alegría, J. Colmenero… in The European Physical Journal E (2003)

  3. No Access

    Article

    Methyl group dynamics in a confined glass

    We present a neutron scattering investigation on methyl group dynamics in glassy toluene confined in mesoporous silicates of different pore sizes. The experimental results have been analysed in terms of a barr...

    A.J. Moreno, J. Colmenero, A. Alegría… in The European Physical Journal E (2003)

  4. No Access

    Article

    Secondary relaxation in two engineering thermoplastics by neutron scattering and dielectric spectroscopy

    We present a preliminary investigation of the dynamics of glassy polycarbonate (PC) and polysulfone (PSF) by means of quasielastic neutron scattering and dielectric spectroscopy. Whereas the consideration of p...

    S. Arrese-Igor, A. Arbe, A. Alegría, J. Colmenero, B. Frick in Applied Physics A (2002)

  5. No Access

    Article

    Methyl group dynamics in a glass and its crystalline counterpart by neutron scattering

    Methyl group dynamics in the same sample of sodium acetate trihydrate in crystalline and glassy states have been investigated by neutron scattering. Measurements have been carried out in the whole temperature ...

    A.J. Moreno, A. Alegría, J. Colmenero, B. Frick in Applied Physics A (2002)

  6. No Access

    Article

    The rotational barrier for methyl group dynamics in anhydrous sodium acetate

    Methyl group dynamics in anhydrous sodium acetate have been investigated by neutron scattering. The results in the rotational tunnelling and crossover regimes can be understood in terms of a threefold rotation...

    A.J. Moreno, A. Alegría, J. Colmenero, B. Frick in Applied Physics A (2002)