Cellulose Acetate Sulfate as a Lyotropic Liquid Crystalline Polyelectrolyte: Synthesis, Properties, and Application

Table 1

Effect of the esterification mixture components volume ratio (AA/SA) on the main CAS characteristics.

Volume ratio AA/SA	Content of “combined’’ acids, wt.%		Degree of substitution		𝑉, mm^2/s	Yield, wt.%
	AAc	ASulf	DSAc	DSSulf
10 : 0.2	21	21	0.8	0.5	Solution is not formed	5±3
10 : 0.5	22	32	1.0	0.9	4.7	51±5
10 : 1	18	32	0.8	0.9	2.8	𝟗𝟓±𝟓
7 : 1	17	33	0.7	0.9	3.0	85±5
5 : 1	10	33	0.4	0.8	3.1	35±3
4 : 1	10	29	0.4	0.7	4.4	29±3

Note: Esterification duration is 2 hours.