Characterization of colloidal and particulate silica by field-flow fractionation

J. Calvin Giddings; S. Kim Ratanathanawongs; Bhajendra N. Barman; Myeong Hee Moon; Guangyue Liu; Brenda L. Tjelta; Marcia E. Hansen

Characterization of colloidal and particulate silica by field-flow fractionation

J. Calvin Giddings, S. Kim Ratanathanawongs, Bhajendra N. Barman, Myeong Hee Moon, Guangyue Liu, Brenda L. Tjelta, Marcia E. Hansen

Department of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Particle-size and mass distribution curves, along with information on particle porosity, density, shape, and aggregation, can be obtained for submicrometer- and supramicrometer-size silica materials suspended in either aqueous or nonaqueous media by field-flow fractionation (FFF). Narrow fractions can readily be collected for confirmation or further characterization by microscopy and other means. Among the silicas examined were different types of colloidal microspheres, fumed silica, and various chromatographic supports. Size distribution curves for aqueous silica suspensions were obtained by both sedimentation FFF and flow FFF and for nonaqueous suspensions by thermal FFF. Populations of aggregates and oversized particles were isolated and identified in some samples. The capability of FFF to achieve the high-resolution fractionation of silica is confirmed by the collection of fractions and their examination by electron microscopy.

Original language	English
Title of host publication	Colloidal Silica
Subtitle of host publication	Fundamentals and Applications
Publisher	CRC Press
Pages	549-564
Number of pages	16
ISBN (Electronic)	9781420028706
ISBN (Print)	9780824709679
Publication status	Published - 2005 Jan 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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Giddings, J. C., Ratanathanawongs, S. K., Barman, B. N., Moon, M. H., Liu, G., Tjelta, B. L., & Hansen, M. E. (2005). Characterization of colloidal and particulate silica by field-flow fractionation. In Colloidal Silica: Fundamentals and Applications (pp. 549-564). CRC Press.

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abstract = "Particle-size and mass distribution curves, along with information on particle porosity, density, shape, and aggregation, can be obtained for submicrometer- and supramicrometer-size silica materials suspended in either aqueous or nonaqueous media by field-flow fractionation (FFF). Narrow fractions can readily be collected for confirmation or further characterization by microscopy and other means. Among the silicas examined were different types of colloidal microspheres, fumed silica, and various chromatographic supports. Size distribution curves for aqueous silica suspensions were obtained by both sedimentation FFF and flow FFF and for nonaqueous suspensions by thermal FFF. Populations of aggregates and oversized particles were isolated and identified in some samples. The capability of FFF to achieve the high-resolution fractionation of silica is confirmed by the collection of fractions and their examination by electron microscopy.",

author = "Giddings, {J. Calvin} and Ratanathanawongs, {S. Kim} and Barman, {Bhajendra N.} and Moon, {Myeong Hee} and Guangyue Liu and Tjelta, {Brenda L.} and Hansen, {Marcia E.}",

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Characterization of colloidal and particulate silica by field-flow fractionation. / Giddings, J. Calvin; Ratanathanawongs, S. Kim; Barman, Bhajendra N.; Moon, Myeong Hee; Liu, Guangyue; Tjelta, Brenda L.; Hansen, Marcia E.

Colloidal Silica: Fundamentals and Applications. CRC Press, 2005. p. 549-564.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

TY - CHAP

T1 - Characterization of colloidal and particulate silica by field-flow fractionation

AU - Giddings, J. Calvin

AU - Ratanathanawongs, S. Kim

AU - Barman, Bhajendra N.

AU - Moon, Myeong Hee

AU - Liu, Guangyue

AU - Tjelta, Brenda L.

AU - Hansen, Marcia E.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Particle-size and mass distribution curves, along with information on particle porosity, density, shape, and aggregation, can be obtained for submicrometer- and supramicrometer-size silica materials suspended in either aqueous or nonaqueous media by field-flow fractionation (FFF). Narrow fractions can readily be collected for confirmation or further characterization by microscopy and other means. Among the silicas examined were different types of colloidal microspheres, fumed silica, and various chromatographic supports. Size distribution curves for aqueous silica suspensions were obtained by both sedimentation FFF and flow FFF and for nonaqueous suspensions by thermal FFF. Populations of aggregates and oversized particles were isolated and identified in some samples. The capability of FFF to achieve the high-resolution fractionation of silica is confirmed by the collection of fractions and their examination by electron microscopy.

AB - Particle-size and mass distribution curves, along with information on particle porosity, density, shape, and aggregation, can be obtained for submicrometer- and supramicrometer-size silica materials suspended in either aqueous or nonaqueous media by field-flow fractionation (FFF). Narrow fractions can readily be collected for confirmation or further characterization by microscopy and other means. Among the silicas examined were different types of colloidal microspheres, fumed silica, and various chromatographic supports. Size distribution curves for aqueous silica suspensions were obtained by both sedimentation FFF and flow FFF and for nonaqueous suspensions by thermal FFF. Populations of aggregates and oversized particles were isolated and identified in some samples. The capability of FFF to achieve the high-resolution fractionation of silica is confirmed by the collection of fractions and their examination by electron microscopy.

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