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135046 - Effect of shearing stress on the radial heterogeneity.pdf (4.63 MB)

Effect of shearing stress on the radial heterogeneity and chromatographic performance of styrene-based polymerised high internal phase emulsions prepared in capillary format

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journal contribution
posted on 2023-05-20, 07:17 authored by Desire, CT, Arrua, RD, Mansour, FR, Bon, SAF, Hilder, EF
Poly(styrene-co-divinylbenzene) monoliths were prepared from the polymerisation of water-in-monomer high internal phase emulsions consisting of a 90 vol% internal phase and stabilised by the non-ionic surfactant Span 80®. The materials were prepared in capillary housings of various internal diameters ranging from 150 μm to 540 μm by simply passing the emulsion through the capillaries. When low shear (300 rpm) was used for emulsification, the droplet and resulting void size distributions were observed to shift towards lower values when the emulsions were forced through capillaries of internal diameter less than 540 μm and all columns exhibited significant radial heterogeneity. When high shear was employed (14 000 rpm) the resulting emulsions preserved their structure when forced through these capillaries and possessed narrower void size distributions with no obvious radial heterogeneity observed upon curing. This resulted in significantly improved chromatographic performance for the separation of a standard mixture of proteins when compared to the materials prepared under low shear.

History

Publication title

RSC Advances

Volume

9

Issue

13

Pagination

7301-7313

ISSN

2046-2069

Department/School

School of Natural Sciences

Publisher

Royal Society of Chemistry

Place of publication

UK

Rights statement

This journal is © The Royal Society of Chemistry 2019

Repository Status

  • Open

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Expanding knowledge in the chemical sciences

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