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  1. No Access

    Article

    Crossover from Rouse dynamics to the α-relaxation in poly (vinyl ethylene)

    By means of neutron spin echo (NSE) we have explored the dynamics of poly(vinyl ethylene) on length scales covering Rouse dynamics and below. The results establish the simultaneous existence of a generic subli...

    A. Arbe, J. Colmenero, D. Richter, M. Monkenbusch, L. Willner, B. Farago in Pramana (2004)

  2. No Access

    Article

    Hydrogen motions and the α-relaxation in glass-forming polymers: Molecular dynamics simulation and quasi-elastic neutron scattering results

    The combination of molecular dynamics simulations and neutron scattering measurements on three different glass-forming polymers (polyisoprene, poly(vinyl ethylene) and polybutadiene) has allowed to establish t...

    J. Colmenero, A. Arbe, F. Alvarez, A. Narros, D. Richter, M. Monkenbusch… in Pramana (2004)

  3. No Access

    Chapter

    Dynamics of Glass Forming Polymers by Neutron Spin Echo

    Nowadays life would be difficult to imagine without the ubiquitous presence of polymers. They are very important from both, the technical/practical and the basic point of view. As chains made of simply connect...

    J. Colmenero, A. Arbe, D. Richter, B. Farago… in Neutron Spin Echo Spectroscopy (2003)

  4. No Access

    Chapter

    Polymer Dynamics by Dielectric Spectroscopy and Neutron Scattering — a Comparison

    Polymeric systems show a very rich variety of dynamical processes which manifest themselves in different frequency ranges at a given temperature. Between vibrations taking place at time scales faster than the ...

    A. Arbe, J. Colmenero, D. Richter in Broadband Dielectric Spectroscopy (2003)

  5. 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)

  6. No Access

    Article

    Neutron scattering on partially deuterated polybutadiene

    The molecular nature of the secondary relaxation (Johari–Goldstein relaxation) and its relationship with the α relaxation is in most cases still unknown. In order to access these processes on a molecular level...

    S. Kahle, L. Willner, M. Monkenbusch, D. Richter, A. Arbe… in Applied Physics A (2002)

  7. No Access

    Article

    Component dynamics in polymer blends: a combined QENS and dielectric spectroscopy investigation

    The individual dynamics of the two constituents of a binary polymer blend was studied by means of quasielastic neutron scattering and dielectric spectroscopy (DS). The combination of neutron spin-echo and back...

    S. Hoffmann, D. Richter, A. Arbe, J. Colmenero, B. Farago in Applied Physics A (2002)

  8. No Access

    Article

    Dynamics at the Glass Transition in Polymers: Results from Neutron Spectroscopy

    This short review presents quasielastic neutron scattering and dielectric experiments on the βslow relaxation in polybutadiene and polyvinylchloride. Exploiting the momentum transfer dependent dynamic structure f...

    D. Richter, A. Arbe, J. Colmenero in MRS Online Proceedings Library (1996)

  9. No Access

    Article

    Fast Dynamics in Glass-Forming Polymers Revisited

    The so called “fast-dynamics” of glass-forming systems as observed by time of flight (TOF) neutron scattering techniques is revisited. TOF-results corresponding to several glass-forming polymers with different...

    J. Colmenero, A. Arbe, C. Mijangos, H. Reinecke in MRS Online Proceedings Library (1996)

  10. No Access

    Chapter

    Dynamics of the α-relaxation in glass-forming polymeric systems. Study by neutron scattering and relaxation techniques

    The dynamics of the α-relaxtion in three glass-forming polymeric systems has been studied by means of quasielastic neutron scattering as well as by relaxation techniques. By using these techniques, we have covere...

    A. Arbe, A. Alegría, F. Alvarez… in Application of Scattering Methods to the D… (1993)