Transcription of Measure and Modify Colloidal Stability - HORIBA
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Measure and Modify Colloidal Stability - HORIBA
2012 HORIBA , Ltd. All rights and Modify Colloidal StabilityFeaturing the SZ-100 Nanoparticle Analyzer 2012 HORIBA , Ltd. All rights DefinitionTwo phases: Dispersed phase(particles) Continuous phase(dispersion medium, solvent) May be solid, liquid, or gaseous Size range 1 nm 1 micronHigh surface area creates unique properties(suspension) 2012 HORIBA , Ltd. All rights or Nanoparticle? Colloid: 1 nm 1 m Nanoparticle: 1 100 nm So a suspension of 50 nm gold particles in water: colloid or nanoparticle? Both, mostly terminology Also hear nanocolloid, nanoparticle (<100 nm) 2012 HORIBA , Ltd. All rights or Not?SSA = 6/ D50 nmD from SEM ~50 nmD from SSA ~60-70 nmD from DLS ~250 nmSo: is this a nanoparticle?ultrasoundUsed ultrasound to disperseto primary particles or useweak acid to break bondsD from DLS ~50 nm 2012 HORIBA , Ltd.
© 2012 HORIBA, Ltd. All rights reserved. Mark Bumiller mark.bumiller@horiba.com www.horiba.com/particle Measure and Modify Colloidal Stability Featuring the SZ-100 ...
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