Chemistry Reference
In-Depth Information
1
0.1
0.01
1
C
0
(mg/ml)
Figure 2 Emulsion surface area A created by emulsification of 5 wt.% MCT oil with
different OSA-starches:
'
, B39-22;
J
, B27-21;
n
, B86-10
(Redrawn from Ref. 9).
20
16
12
8
4
0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Apparent c
eq
(mg/ml)
Figure 3 Adsorption isotherms for the OSA-starches at the oil-water interface:
'
,
B39-22;
J
, B27-21;
n
, B86-10
(Redrawn from Ref. 9).
created. Microscopy of the emulsions showed no significant flocculation
throughout the experiments.
The adsorption isotherm for each of these OSA-starch samples is shown in
Figure 3. The surface load G is plotted against the apparent equilibrium
concentration of OSA starch in the bulk solution (apparent c
eq
). The surface
load for samples B27-21 and B86-10 shows little concentration dependence, and
is approximately 1
3mgm
2
, which corresponds quite well to what is expected
for a monolayer of an adsorbed macromolecule.
19
However, at
lower
Search WWH ::
Custom Search