Chemistry Reference
In-Depth Information
Table 3.17.
Phase transition of polymers
∗
.
3
.
67
n
7
8
9
10
11
12
T
CS
(K)
466
473
460
468
452
463
T
SI
(K)
480
493
473
484
466
480
∗
Source: Josson
et al
. (1989).
the mesogenic unit in
is longer than, but rather similar with what
was shown in Figure 3.9. This mesogenic unit can thus be included in the
category of “flexible rodlike mesogenic units.” However, because it is much
longer than that in
3
.
66
, the transition temperatures and thermal stability
of
3
.
67
are higher than that of
3
.
66
.
3
.
67
