Critical overlap concentration and intrinsic viscosity data of xanthan gum aqueous solutions in dimethyl sulfoxide

• Type: Other Publications
• Date: 2020

Authors

Rodrigues, T (Author) Other; Galindo Rosales, FJ (Author) FEUP; Campo Deano, L (Author) FEUP

Other information

Authenticus ID: P-00T-B7P

DOI: 10.1016/j.dib.2020.106431

Abstract (EN): This is the supplementary information of the research paper "Haemodynamics around confined microscopic cylinders" by Rodrigues et al. [1]. The critical overlap concentration of entanglement of polymer coils indicates whether a polymer solution is dilute or semidilute. Here, the reader will find the determination of c* for xanthan gum aqueous solutions in 52 wt.% of dimethyl sulfoxide, often used as non-particulate blood analogues. From the shear flow curves of a dilution series of the polymer the zero-shear viscosities eta(0) were obtained, allowing us to estimate the intrinsic viscosity [eta] based on the xanthan gum concentration of the fluids. Two methodologies for doing so are described: using information from multi-concentration measurements and from a single polymer solution (rough estimate). With the intrinsic viscosity the determination of c* is straightforward. (c) 2020 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Language: English

Type (Professor's evaluation): Scientific