Speaker
Dr
Margarita Kruteva
(Jülich Centre for Neutron Science)
Description
In this talk, a number of key results obtained in JCNS-1 on structure and dynamics of polymers investigated by neutron scattering and NMR using deuterated polymers will be presented. In the first part, structure and dynamics of polymers under confinement will be discussed. In particular, influence of the polymer-surface interaction on the polymer dynamics and specific phase formation will be addressed [1,2]. Secondly the importance of macromolecular topology on the dynamics and very recent insights into the structure and dynamics of ring polymers will be discussed [3,4]. Later a combined analysis of small-angle neutron scattering (SANS), linear rheology and pulsed field gradient (PFG) NMR spectroscopy experiments on the supramolecular association and chain structure of well-defined telechelically modified poly(ethylene glycol) (PEG) in the bulk will be presented. Moreover, based on the static results [5], the dynamical NSE experiment directly reveal hydrogen bond lifetime, which is one of the key parameters determining macroscopic properties of supramolecular polymer melts [6].
Primary author
Dr
Margarita Kruteva
(Jülich Centre for Neutron Science)
Co-author
Dr
Jürgen Allgaier
(JCNS-1)
