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Fabrication of bonded monolithic porous layer open tubular (monoPLOT) columns in wide bore capillary by laminar flow thermal initiation

journal contribution
posted on 2023-05-17, 17:57 authored by Dylan Collins, Nesterenko, EP, Brabazon, D, Brett PaullBrett Paull
A novel scalable procedure for the thermally initiated polymerisation of bonded monolithic porous layers of controlled thickness within open tubular fused silica capillaries (monoPLOT columns) is presented. Porous polymer layers of either polystyrene-divinylbenzene or butyl methacrylate-ethylene dimethacrylate, of variable thickness and morphology were polymerised inside fused silica capillaries utilising combined thermal initiation and laminar flow of the polymerisation mixture. The procedure enables the production through thermal initiation of monoPLOT columns of varying length, internal diameter, user defined morphology and layer thickness for potential use in both liquid and gas chromatography. The morphology and thickness of the bonded polymer layer on the capillary wall is strongly dependent on the laminar flow properties of the polymerisation mixture and the changing shear stress within the fluid across the inner diameter of the open capillary. Owing to the highly controlled rate of polymerisation and its dependence on fluid shear stress at the capillary wall, the procedure was demonstrably scalable, as illustrated by the polymerisation of identical layers within different capillary diameters.

History

Publication title

Chromatographia

Volume

76

Issue

11-12

Pagination

581-589

ISSN

0009-5893

Department/School

School of Natural Sciences

Publisher

Springer

Place of publication

Germany

Rights statement

Copyright 2013 Springer-Verlag

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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