Chemistry Reference
In-Depth Information
a measure of the total amount of solid in a unit volume, specific area defines how finely
the solid is distributed. Because of the small diameter and interpore spacing, the spe-
cific area of PS can be extremely high as shown in Table 8.6.
Given the porosity and pore diameter, the specific area of a PS can be roughly
estimated, assuming straight circular pores having an average diameter of
where
A
is the specific surface area (m
2
/cm
3
) and
p
is the porosity (%).
