Cellulose Acetate Sulfate as a Lyotropic Liquid Crystalline Polyelectrolyte: Synthesis, Properties, and Application
Table 6
Solvent composition effect on the hydrodynamic characteristics and the parameters of thermodynamic polymer chain rigidity of Na-CAS in aqueous-alcoholic media.
, vol. %
, 100 cm3/g
, g/100 cm3
, Å
LC*
0
0.44
0.66
1.70
0.49
220
29
0.26
+
Ethanol
5
0.52
0.58
2.28
0.81
170
22
0.33
+
10
0.46
0.71
2.55
0.83
160
21
0.34
+
20
0.45
0.54
3.80
0.92
120
16
0.47
+
30
0.45
0.40
6.05
1.09
80
10
0.64
−
Isopropanol
5
0.54
0.60
3.50
1.13
130
17
0,42
−
10
0.50
0.62
5.43
1.68
90
12
0,83
−
20
0.45
0.74
7.87
2.62
70
9
0,69
−
30
0.31
1.25
precipitation occurred at c 5 g/100 cm3
Glycerol
10
0.57
0.81
1.90
0.88
200
26
0.29
+
50
0.61
0.39
8.80
2.09
60
8
0.75
−
*Note “+”—LC phase was formed. “–”—LC phase was not formed.
