Effect of Surfactants on Association Characteristics of Di- and Triblock Copolymers of Oxyethylene and Oxybutylene in Aqueous Solutions: Dilute Solution Phase Diagrams, SANS, and Viscosity Measurements at Different Temperatures

Table 4

Micellar parameters for 2% (w/v) B-1-or B-2-surfactants mixture solutions in D₂O at different temperatures.

T/°C	Surf. Conc.,; g·dl^−1	Rc; Å	𝑅hs; Å	𝜙	𝑁B-1	𝑁SDS	T/°C	Surf. Conc.,; g·dl^−1	Rc; Å	𝑅hs; Å	𝜙	𝑁B-2	𝑁SDS
		B-1-						B-2-
	Hard sphere
	SDS						SDS
30	0.001	39	88	0.08	237	—	30	1	14	32	0.04	1	33
	0.05	35	74	0.09	174	—
	1.00	20	45	0.19	2	93
		b; Å	a; Å	b/a	𝑁B-1	𝑁SDS			b; Å	a; Å	b/a	𝑁B-2	𝑁SDS
		Prolate ellipsoidal
56	0.001	81	36	2.3	416		73	0.0005	83	29	2.9	257	—
67	0.05	50	36	1.4	253		75	0.05	77	31	2.5	255	—
70	1	81	37	2.2	4	205	75	1	81	29	2.9	2	145
		b; Å	a; Å	b/a	𝑁B-1	𝑁DTAB			b; Å	a; Å	b/a	𝑁B-2	𝑁DTAB
		Prolate ellipsoidal
	DTAB							DTAB
30	0.05	61	34	1.8	269		30	1	31	21	1.5	1	75
	0.1	43	35	1.2	202
	1.0	41	25	1.6	1	130
55	0.05	147	36	4.1	365	—	73	0.0005	109	30	3.6	343	—
61	0.1	88	38	2.3	371	—	75	0.1	80	31	2.6	252	—
70	1.0	120	35	3.4	1	250	75	1.0	44	25	1.8	1	159
	TX-100				𝑁B-1	𝑁TX-100		TX-100				𝑁B-2	𝑁TX-100
30	6.0	42	234	1.7	23	193	30	6.0	34	23	1.6	16	153
48	6.0	59	24	2.5	34	283	57	6.0	78	23	3.4	35	245
50	0.01	94	27	3.5	276		59	3.0	94	24	3.9	69	373
53	3.0	105	26	4.0	105	480	72	0.01	94	29	3.2	266	—