Investigating adsorbing viscoelastic fluids using the quartz crystal microbalance
Hodges, Chris S., Harbottle, David, and Biggs, Simon (2020) Investigating adsorbing viscoelastic fluids using the quartz crystal microbalance. ACS Omega, 5 (35). pp. 22081-22090.
|
PDF (Published Version)
- Published Version
Download (2MB) | Preview |
Abstract
There is little research on using the quartz crystal microbalance (QCM) with adsorbing viscoelastic fluids. These fluids are widely encountered but often difficult to study as many are opaque and highly viscous. Since the QCM does not involve any scattering or reflection of input radiation, it has the potential to study these complex fluids to determine the relative viscoelasticity of the bulk fluid and surface adsorption of active species onto different substrates. In the current study, both Newtonian (sucrose) and viscoelastic (sodium polystyrene sulfonate (NaPSS)) fluids were introduced into the QCM, and the sensor responses were compared. QCM responses of Newtonian sucrose solutions matched the Kanazawa and Gordon model (KG model), as expected. The QCM responses with viscoelastic NaPSS solutions were well below those described by the KG model. A viscoelastic model was used to determine the fluid viscosity and shear modulus at a very high frequency. It was found that the viscosity of NaPSS did not change much compared with low-frequency rheometer measurements, but a significant increase in the shear modulus of several orders of magnitude was found at the QCM frequencies. Modifying the KG model frequency shifts by multiplying by the QCM shear wave decay length ratio, X = δV/δN, we were able to match the measured QCM values in viscoelastic NaPSS solutions. The QCM dissipation values for NaPSS were matched in a similar way by multiplying the KG model by X1/3. By changing the QCM sensor from silica (no NaPSS adsorption) to alumina (NaPSS adsorption), it was shown that the adsorption isotherm of NaPSS on alumina could be recovered and fitted with a Langmuir isotherm despite the frequency response being only a small fraction of the total measured QCM signal.
| Item ID: | 73327 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 2470-1343 |
| Copyright Information: | © 2020 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. Standard ACS AuthorChoice/Editors’ Choice usage agreement link: https://pubs.acs.org/page/policy/authorchoice_termsofuse.html PERMITTED USES a. For non-commercial research and education purposes only, You may access, download, copy, display and redistribute articles as well as adapt, translate, text and data mine content contained in articles, subject to the following conditions: i. The authors' moral right to the integrity of their work under the Berne Convention (Article 6bis) is not compromised. ii. Where content in the article is identified as belonging to a third party, it is your responsibility to ensure that any reuse complies with copyright policies of the owner. iii. Copyright notices or the display of unique Digital Object Identifiers (DOI’s), ACS or journal logos, bibliographic (e.g. authors, journal, article title, volume, issue, page numbers) or other references to ACS journal titles, web links, and any other journal-specific “branding” or notices that are included in the article or that are provided by the ACS with instructions that such should accompany its display, should not be removed or tampered with in any way. The display of ACS AuthorChoice or ACS Editors’ Choice articles on non-ACS websites must be accompanied by prominently displayed links to the definitive published versions of those articles on the ACS website. iv. Any adaptations for non-commercial purposes must prominently link to the definitive published version on the ACS website and prominently display the statement: “This is an unofficial adaptation of an article that appeared in an ACS publication. ACS has not endorsed the content of this adaptation or the context of its use.” v. Any translations for non-commercial purposes, for which a prior translation agreement with ACS has not been established, must prominently link to the definitive published version on the ACS website and prominently display the statement: “This is an unofficial translation of an article that appeared in an ACS publication. ACS has not endorsed the content of this translation or the context of its use.” b. Each time You distribute this ACS article or an adaptation, ACS offers to the recipient a license to this ACS article on the same terms and conditions as the license granted to You under this License. c. For permission to use ACS copyrighted articles beyond that permitted here, visit: http://pubs.acs.org/copyright/permissions.html |
| Date Deposited: | 23 Aug 2022 04:15 |
| FoR Codes: | 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340603 Colloid and surface chemistry @ 100% |
| Downloads: |
Total: 613 Last 12 Months: 10 |
| More Statistics |
Actions (Repository Staff Only)
 |
Item Control Page |