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In Situ Measurement of Polymer Layer Thickness in Porous Layer Open Tubular (PLOT) Columns Using Optical Absorbance in the Near-IR Range
Citation
Collins, D and Nesterenko, E and Paull, B, In Situ Measurement of Polymer Layer Thickness in Porous Layer Open Tubular (PLOT) Columns Using Optical Absorbance in the Near-IR Range, Separations, 3, (34) pp. 1-11. ISSN 2297-8739 (2016) [Refereed Article]
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Copyright Statement
Copyright 2016 the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
DOI: doi:10.3390/separations3040034
Abstract
Highly reproducible fabrication of porous layer open tubular (PLOT) structures in fused silica capillaries is often challenging; thus, methods to measure layer thickness growth in real time represent a powerful tool for the production of such columns. The work presented herein demonstrates the application of optical absorbance in the near-infrared (near IR) range for the in-process measurement of polymer layer growth inside fused silica capillaries during the fabrication of PLOT columns. The proposed technique can be used for both on- and off-line measurements of layer thickness for thermal- and photo- initiated polymerisation methods, performed in either polytetrafluoroethylene (PTFE)- or polyimide-coated capillaries. Measurements of layer thickness were carried out at λ 700 nm, using 100 μm and 8 μm optical fibres, yielding relative standard deviation (%RSD) values of 27% and 22%, respectively.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | porous layer open tubular columns; capillary chromatography; near-IR |
| Research Division: | Chemical Sciences |
| Research Group: | Analytical Chemistry |
| Research Field: | Separation Science |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in the Chemical Sciences |
| Author: | Paull, B (Professor Brett Paull) |
| ID Code: | 113611 |
| Year Published: | 2016 |
| Deposited By: | Chemistry |
| Deposited On: | 2017-01-09 |
| Last Modified: | 2017-08-29 |
| Downloads: | 11 View Download Statistics |
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