Page 43 - Introduction to Colloid and Surface Chemistry
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34 Kinetic properties
2h 25h
Figure 2.7 Sedimentation of a monodispersed sample of Limulus haemocyanin
32
measured by the Philpot-Svenson schlieren method (18 000 rev min~l) (By courtesy
of the American Chemical Society)
and, since Df-kT,
2
dx _ mD(l- vp)o) x
dt kT
2
MD(\-vp)o) x
RT
RTs
or M -• (2.16)
D(l-vp)
where M is the molar mass (unsolvated) and s the sedimentation
coefficient
dx/dt
Integrating,
In x 2lx\
(2.17)
2
a> (t 2 -ti,
