92168.pdf
12 The colloidal state The rate of particle growth depends mainly on the following factors: The amount of material available. T ...
The colloidal state 13 closeness, the barium sulphate particles will tend to link and the dispersion will take the form of a tra ...
14 The colloidal state Virtually all of the sulphur particles are born within this short time period Rapid relief of supersatura ...
The colloidal state 15 methacrylate)), terylene (poly (ethylene terephthalate)) and the nylons, e.g. (poly (hexamethylene adipam ...
16 The colloidal state causes chain initiation to take place at many more points throughout the reaction mixture. Condensation p ...
The colloidal state 11 A typical recipe for the polymerisation of a vinyl monomer would be to form an oil-in-water emulsion from ...
18 The colloidal state Dialysis and gel filtration Conventional filter papers retain only particles with diameters in excess of ...
The colloidal state 19 Motor Colloidal solution being dialysed Visking dialysis tubing Figure 1.5 A simple dialysis set-up index ...
20 The colloidal state screens supporting the membranes speeds up the migration of small ions to the membrane surface prior to t ...
The motion of particles in liquid media In this chapter the thermal motion of dissolved macromolecules and dispersed colloidal p ...
22 Kinetic properties is attained, when the driving force on the particle and the resistance of the liquid are equal: m(l-vp)g=f ...
Kinetic properties 23 Factional ratios The frictional coefficient of an asymmetric particle depends on its orientation. At low v ...
24 Kinetic properties 0,08 E 0.06 : 0 0.2 0.4 0.6 0.8 } .0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 Hydration Mass of water/mass ...
Kinetic properties 25 position along a given axis after a time t is given by Einstein's equation: JT = (2Dtf (2.4) where D is th ...
26 Kinetic properties Table 2.1 Diffusion coefficients and Brownian displacements calculated for uncharged spheres in water at 2 ...
Kinetic properties 27 The proportionality factor D is called the diffusion coefficient. It is not strictly a constant, since it ...
28 Kinetic properties Therefore, combining equations (2.10) and (2.11), x = (20^ (2.4) Diffusion equation (2.5) The work done in ...
Kinetic properties 29 reciprocal of the ffictional ratio /// 0. Charge effects are discussed on page 37. Measurement of diffusio ...
30 Kinetic properties f» 2500s / - 400 s t- 100s C 0 0 Figure 2.4 Distribution of (a) concentration and (b) concentration gradie ...
Kinetic properties 31 Porous plug method The two liquids are separated by a sintered glass disc with a pore size of 5-15 fjLm (t ...
«
1
2
3
4
5
6
7
8
9
10
»
Free download pdf