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In-process phase growth measurement technique in the fabrication of monolithic porous layer open tubular (monoPLOT) columns using capacitively coupled contactless conductivity

Collins, David and Nesterenko, Pavel and Brabazon, Dermot and Paull, Brett (2013) In-process phase growth measurement technique in the fabrication of monolithic porous layer open tubular (monoPLOT) columns using capacitively coupled contactless conductivity. Analyst, 138 (9). pp. 2540-2545. ISSN 0003-2654

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Abstract

A technique for the in-process measurement of polymer stationary phase growth inside fused silica capillaries during the fabrication of monolithic porous layer open tubular (monoPLOT) columns is presented. In this work, capacitively coupled contactless conductivity detection (C4D) was applied as an online measurement tool for porous polymer layer growth within fused silica capillaries. The relationship between effective capillary diameter and C4D response was investigated for two polymers, butyl methacrylate–ethylene dimethacrylate (BuMA–EDMA) and polystyrene–divinylbenzene (PS–DVB) over a range of capillary diameters and layer thicknesses. The described technique can be used with both thermal and photo-initiated approaches for monoPLOT fabrication and provides an accurate, realtime measurement of the porous layer growth within the capillary, which should vastly improve columnto-column reproducibility. The technique was shown to be very precise, with a measured %RSD < 10%.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:MonoPLOT columns; Fabrication
Subjects:Physical Sciences > Chemistry
DCU Faculties and Centres:Research Initiatives and Centres > Irish Separation Science Cluster (ISSC)
Publisher:Royal Society of Chemistry
Official URL:http://dx.doi.org/10.1039/c3an00133d
Copyright Information:© 2013 RSC
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:20529
Deposited On:27 Mar 2015 11:30 by Fran Callaghan. Last Modified 27 Mar 2015 11:30

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