Nordic Workshop on Scattering from Soft Matter

Session

Session 1

17 Jan 2018, 13:30

Auditorium (Medicon Village)

76. Low radiation dose XPCS for dynamics in soft matter and biologial materials

Christian Gutt (University Siegen)

17/01/2018, 13:30

X-ray radiation damage provides a serious bottle neck for investigating μs to s dynamics on nanometer length scales employing X-ray photon correlation spectroscopy. This limitation hinders the investigation of real time dynamics in most soft matter and biological materials which can tolerate only X-ray doses of kGy and below. Here, we show that this bottleneck can be overcome by low dose...

3. Structrural characterization of cellulose nanocrystals using SAXS

Dr Heike Ehmann (Anton Paar)

17/01/2018, 14:00

Cellulose is the main building block of trees and plants and the most abundant biopolymer in the world. It consists of highly ordered domains (nano crystals) and amorphous regions. These cellulose nanocrystals (CNC) have received significant interest due to their mechanical, optical, chemical, and rheological properties. CNC primarily obtained from naturally occurring cellulose fibers are...

31. Short-time self-dynamics of immunoglobulin under bio- mimicking crowding conditions

Dr Marco Grimaldo (ILL)

17/01/2018, 14:15

Approximately 10-40% of the intra- and extracellular fluids of living organisms are occupied by macromolecules such as proteins. This macromolecular crowding condition was shown to influence reaction rates, and to lead to anomalous diffusion. The study of protein diffusion in such a crowded environment is, generally, not an easy task. Nevertheless, neutron backscattering (NBS) is well suited...

20. Interactions between Anionic Surfactants and Polymeric Micelles: stability and solubilisation kinetics

Ms Synne Myhre (Department of Chemistry, University of Oslo)

17/01/2018, 14:35

The kinetic processes involved in mixtures of surfactants and block copolymer micelles are not well understood. However, it is commonly known that surfactants exhibit rather fast equilibration kinetics, in the order of micro- to milliseconds, while polymers are much slower, in the order of minutes to months. In this contribution, we will present a study of the stability and solubilization...

5. End of Cooperativity: Chain Exchange Kinetics in Mixed Polymeric Micelles with Partially Crystalline Cores

Mr Nico König (Jülich Centre for Neutron Science JCNS and Institute for Complex Systems ICS, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany AND Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, Oslo, Norway)

17/01/2018, 14:55

Here we present a kinetic study on the chain exchange in mixed polymeric micelles containing partially crystalline cores. We are specifically interested in understanding how cooperative phenomena such as crystallization and melting affect the dynamics of self-assembled systems. As a model system we use n-alkyl-PEO ($C_n{H}_{2n+1}-O-(C{H}_2-C{H}_2-O{)}_{100}H$) with a molecular weight of roughly...