Colloid science : principles, methods and applications by Terence Cosgrove PDF

By Terence Cosgrove

ISBN-10: 1281214833

ISBN-13: 9781281214836

ISBN-10: 1405126736

ISBN-13: 9781405126731

ISBN-10: 1405168382

ISBN-13: 9781405168380

Colloidal structures are vital throughout a number industries, akin to the nutrients, pharmaceutical, agrochemical, cosmetics, polymer, paint and oil industries, and shape the foundation of quite a lot of items (eg cosmetics & toiletries, processed foodstuffs and photographic film). an in depth figuring out in their formation, keep an eye on and alertness is needed in these industries, but many new graduate or postgraduate chemists or chemical engineers have very little direct event of colloids.

Based on lectures given on the hugely winning Bristol Colloid Centre Spring institution, Colloid technology: rules, tools and Applications presents a radical advent to colloid technological know-how for commercial chemists, technologists and engineers. Lectures are collated and offered in a coherent and logical textual content on useful colloid science.

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Extra resources for Colloid science : principles, methods and applications

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10 Schematic of the electrolyte near the interface in the Stern model. tex May 18, 2005 8:56 27 Charge in Colloidal Systems the inner layer (ψ S − ψd ) is assumed to be linear. 21) where σi is the charge ‘stuck’ at the OHP. As in the Helmholtz model, discussed above, the capacitance is independent of applied potential. 22) The Stern theory considers the interface to consist of two regions of potential drop in series, hence the total capacitance, C T = C i C d /C i + C d , will be dominated by the smallest component.

4, reflects the fact that the anions of the different electrolytes are specifically adsorbed to differing extents. 12. It is of note that as silica adsorption of Al3+ ions is so favourable that overcompensation of the surface charge occurs and even though the silica is negatively charged, it is necessary for the diffuse layer to contain an excess of negative ions. 6 Inter-particle forces In obtaining a model of the ion distribution at the interface between a charged phase and electrolyte, a Hg electrode has been considered.

3 May 18, 2005 8:56 Colloid Science: Principles, Methods and Applications Dissolution of ionic solids Silver halide sols underpin photographic film technology and have played an important role in the development of our understanding of charged colloids. 5 × 10−17 . If the dissolution of Ag+ and I− ions are unequal then at equilibrium the sol will contain charged silver iodide particles. Thus, in the presence of excess iodide ions the particles will be negatively charged and with excess silver ions positively charged particles will be obtained.

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Colloid science : principles, methods and applications by Terence Cosgrove

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