Joint publication on DLS-based measurement of diffusion coefficients

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Advanced measurement techniques for diffusion coefficients pave the way to a better understanding of diffusion in chemical processes. In an open-acess paper by Wenchang Wu et al. from the Institute of Advanced Optical Technologies – Thermophysical Properties (AOT‑TP), diffusivities of polyethylene glycols (PEGs) are determined using an advanced optical measurement technique, namely heterodyne dynamic light scattering (DLS). For these investigations, our group provided molar-weight distributed PEGs as well as monodisperse PEGs we obtained by preparative HPLC.

Publication details (open access):

Wenchang Wu, Malvina Supper, Michael H. Rausch, Malte Kaspereit, and Andreas P. Fröba:
Mutual Diffusivities of Binary Mixtures of Water and Poly(ethylene) Glycol from Heterodyne Dynamic Light Scattering.
International Journal of Thermophysics 43(12) (2022) 12
DOI: 10.1007/s10765-022-03101-1

The work was supported by the German Science Foundation (DFG) through the Collaborative Research Centre CRC 1411 “Design of Particulate Products”.