Effect of temperature on particle separation in hollow fiber flow field-flow fractionation

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Hollow fiber flow field-flow fractionation (HF-FIFFF) has been tested by varying the temperature (21-73°C) to increase separation speed with reduced lift forces. It has been experimentally shown that the separation time of 0.050-0.426-μm polystyrene latex standards can be reduced approximately by half, at 59°C, compared to the separation at room temperature. In addition, the resolution for the separation of large diameter particles, which are often influenced by the lift forces, is greatly improved. It also has been found that the steric inversion diameter can be possibly shifted to a larger diameter (up to about 0.800 μm) at 73°C. The steric retention of particles is observed to increase with temperature due to the decrease in hydrodynamic lift forces that is known to decrease with the viscosity of the carrier liquid.

Original languageEnglish
Pages (from-to)676-681
Number of pages6
JournalJournal of Microcolumn Separations
Volume11
Issue number9
DOIs
Publication statusPublished - 1999 Jan 1

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Fractionation
Flow fields
Fibers
Temperature
Latexes
Polystyrenes
Hydrodynamics
Viscosity
Liquids

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Filtration and Separation

Cite this

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abstract = "Hollow fiber flow field-flow fractionation (HF-FIFFF) has been tested by varying the temperature (21-73°C) to increase separation speed with reduced lift forces. It has been experimentally shown that the separation time of 0.050-0.426-μm polystyrene latex standards can be reduced approximately by half, at 59°C, compared to the separation at room temperature. In addition, the resolution for the separation of large diameter particles, which are often influenced by the lift forces, is greatly improved. It also has been found that the steric inversion diameter can be possibly shifted to a larger diameter (up to about 0.800 μm) at 73°C. The steric retention of particles is observed to increase with temperature due to the decrease in hydrodynamic lift forces that is known to decrease with the viscosity of the carrier liquid.",
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Effect of temperature on particle separation in hollow fiber flow field-flow fractionation. / Moon, Myeong Hee; Lee, Kyung Hyun; Min, Byoung Ryul.

In: Journal of Microcolumn Separations, Vol. 11, No. 9, 01.01.1999, p. 676-681.

Research output: Contribution to journalArticle

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