Pore Structure

Random networks generate polygons, on average, 4 sides each, with negative exponentially distributed lengths. Product of sides estimates area of polygons.

Non-random networks have gamma distributed polygon sides. Variance and mean of the equivalent pore radius,
$r=\sqrt{a/\pi},$ given by:

The random case is given by putting k=1.
Flocculated networks have k / b² > 1/b_rand²

Means, standard deviations and coefficients of variation of free-fibre lengths and pore radii increase with flocculation but decrease with increasing grammage. For more details see Dodson and Sampson [8].