Chemistry Reference
In-Depth Information
(a)
(b)
Figure 2.35. The phase diagrams of nematic gels (a)
v
c
=1
.
1
,v
b
=1
.
21 and
(b)
v
c
=0
.
9
,v
b
=0
.
81. (From Wang & Warner, 1997.)
Phase diagram with det
(
v
)
<
0
)
<
0.
This is where the network is more strongly nematic than the pure solvent.
Since
v
c
>v
b
, dilution initially stabilizes the nematic phase of the network.
Thus, N-I coexistence initially extends upwards from
T
=1
.
1
,φ
=1
.
0
(the N-I transition of the neat network) as in Figure 2.36(b). As dilution
Figure 2.36 is a phase diagram for
v
b
=1
.
1 and
v
c
=1
.
2,
i.e.
, det(
v
