Introduction to Colloid and Surface ChemistryThe colloidal state; Kinetic properties; Optical properties; Liquid-gas and liquid- liquid interfaces; The solid-gas interface; Charged interfaces; Colloid stability; Rheology; Emulsions and foams. |
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Page 117
... form of the Dupré equation ( 4.20 ) ( i.e. Ws / L = YS / A + YL / A - Y'S / L ) WS / L = YL / A ( 1 + cos 0 ) .... . ( 6.1 ) which is known as Young's equation . Therefore , zero 117 THE SOLID-LIQUID INTERFACE Contact Angles and Wetting.
... form of the Dupré equation ( 4.20 ) ( i.e. Ws / L = YS / A + YL / A - Y'S / L ) WS / L = YL / A ( 1 + cos 0 ) .... . ( 6.1 ) which is known as Young's equation . Therefore , zero 117 THE SOLID-LIQUID INTERFACE Contact Angles and Wetting.
Page 118
... wetted by the liquid if the contact angle is zero and only partially wetted if the contact angle is finite . Complete non - wetting implies a contact angle of 180 ° , which is an unrealistic situation since it requires that either WS ...
... wetted by the liquid if the contact angle is zero and only partially wetted if the contact angle is finite . Complete non - wetting implies a contact angle of 180 ° , which is an unrealistic situation since it requires that either WS ...
Page 120
... Wetting agents Surface - active materials are used as wetting 120 THE SOLID - LIQUID INTERFACE.
... Wetting agents Surface - active materials are used as wetting 120 THE SOLID - LIQUID INTERFACE.
Contents
THE COLLOIDAL STATE | 1 |
KINETIC PROPERTIES | 16 |
OPTICAL PROPERTIES | 41 |
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acid addition adsorbed adsorption agents amount applied approximately aqueous attraction average become boundary calculated capillary cell charge coefficient colloidal concentration conductance constant contact angle containing curve decrease depends detergent determined diffusion dispersion distance double layer droplets effect electric electrokinetic electrolyte electron electrophoretic emulsion energy equation equilibrium example experimental expression factor field Figure film flocculation flow foam forces give given greater heat hydrocarbon important increase interface involved ions isotherms less light liquid lower material measurements mechanical medium method micelles mobile molecules monolayer motion nature observed orientated particles phase physical polymer positive potential pressure properties protein ratio reduced relative respect result sample scattered sedimentation separated shape shear solid solution solvent spherical spread stability structure studying surface tension take place technique temperature tend theory thickness tion usually various viscosity volume