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(a)
3.0
2.5
2.0
1. 5
1. 0
0.5
0.0
(b)
3
[10]
[11] [20]
Day 18
2
Day 1
Day 1
Day 30
1
0
1
2
3
0
1
2
3
q (nm
−1
)
q (nm
−1
)
(c)
(d)
1
{110}
10
{111}
{200}
{211}
{220}
{211}
pH 10
0.1
1
pH 6
pH 10
pH 6
0.01
0.1
0
1
2
3
4
0
1
2
3
q (nm
−1
)
q (nm
−1
)
0.20
(e)
0.15
19 days
0.10
1 day
0.05
0.00
0.0
0.5
1.0
1.5
2.0
2.5
3.0
q (nm
−1
)
Figure 6.5
Laponite clay effect on the stability of ISAsomes. (a) Laponite-stabilized
DU cubosomes after 1 day (cubic, Pn3m
Im3m) and 18 days (H
2
). (b) Laponite-
stabilized PT cubosomes after 1 and 30 days. The fi gure clearly demonstrates the sta-
bilization by Laponite of these PT - based Pn3m cubosomes. (c) F - 127 - stabilized DU
cubosomes at neutral pH and immediately at pH 10. (d) F-127-stabilized PT-based
cubosomes; lower curve in water, upper curve at pH 10. Graphs have been shifted for
the sake of clarity. Peak indices correspond to Pn3m nanostructure. (e) DU : TC 100 : 0
sample stabilized with F-127 and mixed with a buffer at pH 10. After one day, the
particles display Pn3m
+
+
Im3m internal structure (
), which transforms into H
2
within
19 days (
). Small arrows above or below the peaks indicate cubic nanostructure.
[Graphs are taken or modifi ed from Muller et al. (2010a,b) and Salonen et al. (2008).]
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