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Nanomaterials 2012, 2(1), 15-30; doi:10.3390/nano2010015
Article

Accurate Size and Size-Distribution Determination of Polystyrene Latex Nanoparticles in Aqueous Medium Using Dynamic Light Scattering and Asymmetrical Flow Field Flow Fractionation with Multi-Angle Light Scattering

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Received: 24 November 2011 / Revised: 17 December 2011 / Accepted: 26 December 2011 / Published: 5 January 2012
(This article belongs to the Special Issue From Molecules to Nanomaterials)
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Abstract

Accurate determination of the intensity-average diameter of polystyrene latex (PS-latex) by dynamic light scattering (DLS) was carried out through extrapolation of both the concentration of PS-latex and the observed scattering angle. Intensity-average diameter and size distribution were reliably determined by asymmetric flow field flow fractionation (AFFFF) using multi-angle light scattering (MALS) with consideration of band broadening in AFFFF separation. The intensity-average diameter determined by DLS and AFFFF-MALS agreed well within the estimated uncertainties, although the size distribution of PS-latex determined by DLS was less reliable in comparison with that determined by AFFFF-MALS.
Keywords: asymmetric flow field flow fractionation; multi-angle light scattering; dynamic light scattering; nanoparticle; polystyrene latex asymmetric flow field flow fractionation; multi-angle light scattering; dynamic light scattering; nanoparticle; polystyrene latex
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kato, H.; Nakamura, A.; Takahashi, K.; Kinugasa, S. Accurate Size and Size-Distribution Determination of Polystyrene Latex Nanoparticles in Aqueous Medium Using Dynamic Light Scattering and Asymmetrical Flow Field Flow Fractionation with Multi-Angle Light Scattering. Nanomaterials 2012, 2, 15-30.

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