Complex solutions under shear and pressure: a rheometer setup for X‐ray scattering experiments. (24th March 2017)

• Record Type: Journal Article
• Authors: Wieland, D. C. F.; Zander, T.; Garamus, V. M.; Krywka, C.; Dedinaite, A.; Claesson, P.; Willumeit-Römer, R.
• Is Part Of: Journal of synchrotron radiation. Volume 24:Part 3(2017)
• Page Start: 646
• Page End: 652
• Publication Date: 2017-03-24
• Subjects: rheology -- pressure -- small‐angle X‐ray scattering -- complex solutions -- hyaluronan; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577517002648
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : Development of a high‐pressure rheometer for in situ X‐ray scattering experiments. Abstract : A newly developed high‐pressure rheometer for in situ X‐ray scattering experiments is described. A commercial rheometer was modified in such a way that X‐ray scattering experiments can be performed under different pressures and shear. First experiments were carried out on hyaluronan, a ubiquitous biopolymer that is important for different functions in the body such as articular joint lubrication. The data hint at a decreased electrostatic interaction at higher pressure, presumably due to the increase of the dielectric constant of water by 3% and the decrease of the free volume at 300 bar.