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the basic characteristics of muddy

environments

The basic characteristics and properties of disperse systems are shown on fig. 1.3. Characteristic property of a disperse system is presence of the big boundary surface, therefore properties of a surface for it are defining.

Fig. 1.3. The characteristic of optical properties of disperse systems [4]

The basic characteristics of disperse systems which will be studied in the yielded work, the size of dispersing particles, their distribution in the sizes, concentration, anizometrija the geometrical form and orientation (for samples of polymeric composites and porous polymeric materials) are.

Dispersity D is the basic characteristic of a disperse system and a measure of dissociation of substance. Quantitatively dispersity define as size, return to the characteristic size of a particle:

D = 1/а, (1.1)

Where and - the characteristic size (diameter or length of a rib, etc.), м-1.

On the other hand, for the dissociation characteristic, especially cellular bodies, the size of specific surface Sv  - a total surface of particles or a cellular body, which weight 1кг (or 1г) or which total amount 1 м3 (or 1 sm3) serves.

On dispersity size all systems subdivide on:

• Coarse-dispersion with radius of particles 10-3-10-6м (> 1 microns);

• Is colloidal-disperse (colloidal) with particle size of 10-6-10-9 m (1 micron - 1 nanometer);

• Molecular and ionic (true) solutions with particle size less than 1 nanometers.

Besides particle size for properties of disperse systems the geometrical form of particles has great value. It can be very various depending on conditions of crushing of substance. We will notice, that the system gets properties of dispersity if at least one of three measurements (the characteristic size) is in area of high dispersity. So, if unit volume (1 sm3) initial macrobody to shatter into cubes with length of a rib l

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A source: Sitnikova Vera Evgenievna. SPECTROSCOPIC STUDYING of STRUCTURE of POLYMERIC DISPERSE SYSTEMS. The dissertation on competition of a scientific degree of a Cand.Chem.Sci. Tver - 2015. 2015

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