Particle sizing in highly turbid dispersions by Photon Density Wave spectroscopy
- Photon Density Wave (PDW) spectroscopy is presented as a fascinating technology for the independent determination of scattering (mu(s)’ and absorption (ita) properties of highly turbid liquid dispersions. The theory is reviewed introducing new expressions for the PDW coefficients k(I) and k(Phi). Furthermore, two models for dependent scattering, namely the hard sphere model in the Percus-Yevick Approximation (HSPYA) and the Yukawa model in the Mean Spherical Approximation (YMSA), are experimentally examined. On the basis of the HSPYA particle sizing is feasible in dispersions of high ionic strength. It is furthermore shown that in dialyzed dispersions or in technical copolymers with high particle charge only the YMSA allows for correct dilution-free particle sizing. (C) 2013 Elsevier Ltd. All rights reserved.
| Author details: | Lena BresselORCiDGND, Roland HassORCiDGND, O. Reich |
|---|---|
| DOI: | https://doi.org/10.1016/j.jqsrt.2012.11.031 |
| ISSN: | 0022-4073 |
| Title of parent work (English): | JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER |
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD |
| Place of publishing: | OXFORD |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2013 |
| Publication year: | 2013 |
| Release date: | 2017/03/26 |
| Tag: | Dependent light scattering; Multiple light scattering; Particle sizing; Percus-Yevick model; Photon Density Wave spectroscopy; Polymer dispersions; Yukawa model |
| Volume: | 126 |
| Issue: | 1 |
| Number of pages: | 8 |
| First page: | 122 |
| Last Page: | 129 |
| Funding institution: | German Federal Ministry of Education and Research [03Z2AN12] |
