Preparation and Characterization of Particles with Small Differences in Polydispersity | Zendy

Hans Joachim Schöpe | Zendy; Olivier Marnette | Zendy; W. van Megen | Zendy; Gary Bryant | Zendy

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Preparation and Characterization of Particles with Small Differences in Polydispersity

Author(s) -

Hans Joachim Schöpe,

Olivier Marnette,

W. van Megen,

Gary Bryant

Publication year - 2007

Publication title -

langmuir

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.042

H-Index - 333

eISSN - 1520-5827

pISSN - 0743-7463

DOI - 10.1021/la7018132

Subject(s) - dispersity , particle size , colloid , characterization (materials science) , dynamic light scattering , particle size distribution , particle (ecology) , colloidal particle , materials science , crystallization , chemical physics , nanotechnology , chemical engineering , chemistry , nanoparticle , polymer chemistry , geology , oceanography , engineering

Colloidal particles are widely used both in fundamental research and in materials science. One important parameter influencing the physical properties of colloidal materials is the particle size distribution (polydispersity) of the colloidal particles. Recent work on colloidal crystallization has demonstrated that even subtle changes in polydispersity can have significant effects. In this study we present centrifugation techniques for subtly manipulating the width and the shape of the particle size distribution, for polydispersities less than 10%. We use scanning electron microscopy as well as dynamic and static light scattering to characterize the particle size distributions. We compare the results and highlight the difficulties associated with the determination of accurate particle size distributions.

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