窄分布脂肪醇醚硫酸钠与十四烷基三甲基溴化铵复配性能的研究

doi:10.3969/j.issn.1001-1803.2019.08.001

Abstract

Abstract:

Sodium fatty alcohol ether sulfate with narrow ethylene oxide distribution（N-AE_mS）was synthesized by sulfating the fatty alcohol ether with narrow ethylene oxide distribution with gaseous sulfur trioxide（SO₃）as a sulfating agent. The structure of N-AE_mS（m=3, 5, 7, 9）was characterized by FT-IR and ¹H NMR. The properties of N-AE_mS, tetradecyltrimethylammonium bromide（TTAB）and the mixed systems of N-AE_mS/TTAB（m=3, 5, 7, 9）were investigated by measuring the static surface tension, contact angle and dynamic surface tension. The results indicate that the mixed systems of N-AE_mS/TTAB（m=3, 5, 7）show higher surface activity compared with AE_mS and TTAB. N-AE₉S almost shows no synergistic effect with TTAB due to its high number of EO groups. The diffusion performances of the N-AE_mS/TTAB（m=3, 5, 7, 9）systems are almost unchanged compared with that of N-AE_mS（m=3, 5, 7, 9）, and both are mixed diffusion-kinetic controlled adsorption mechanism.

Key words: narrow ethylene oxide distribution, sodium fatty alcohol ether sulfate, compound performance, structure-function relationship, adsorption mechanism

CLC Number:

TQ423

WANG Xin-gang,YANG Xiao-yi,SUN Yong-qiang,GUO Chao-hua,LI Ping,LI Jian-bo. Study on the properties of the mixtures of sodium fatty alcohol ether sulfate with narrow ethylene oxide distribution and tetradecyltrimethylammonium bromide[J].China Surfactant Detergent & Cosmetics, 2019, 49(8): 485-491.

Figures/Tables 8

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Tab. 2

References 17

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样品	n（N-AE_mS）∶n（TTAB）	cmc/（mmol·L^-1）	γ_cmc/（mN·m^-1）	Γ_max/（μmol·m^-2）	pc₂₀	A₀/nm²	β
	0∶10	4.169 0	36.88	2.07	0.06	0.80	0
N-AE₃S	2∶8	0.034 2	24.90	1.12	3.65	1.51	-13.50
	4∶6	0.013 0	25.75	1.71	3.27	0.97	-16.68
	5∶5	0.086 7	25.12	0.88	3.82	1.89	-8.10
	6∶4	0.013 6	24.80	1.41	3.61	1.18	-15.87
	8∶2	0.024 0	22.95	1.42	3.46	1.17	-13.83
	10∶0	0.170 0	28.18	1.53	2.16	1.09	0
N-AE₅S	2∶8	0.050 7	26.76	1.34	3.00	1.24	-11.73
	4∶6	0.018 0	27.29	1.19	3.34	1.19	-15.31
	5∶5	0.041 8	27.09	1.48	2.90	1.12	-11.04
	6∶4	0.024 8	26.40	1.30	3.38	1.28	-13.14
	8∶2	0.032 2	25.94	1.48	3.08	1.12	-12.27
	10∶0	0.158 0	32.60	1.30	2.17	1.28	0
N-AE₇S	2∶8	0.052 6	28.31	1.35	2.87	1.23	-9.13
	4∶6	0.034 0	30.01	1.11	3.27	1.50	-9.80
	5∶5	0.043 7	28.52	1.03	3.42	1.61	-7.90
	6∶4	0.042 7	28.43	1.14	3.24	1.46	-7.66
	8∶2	0.035 5	29.46	1.17	3.20	1.42	-8.41
	10∶0	0.059 0	34.81	1.22	2.46	1.36	0
N-AE₉S	2∶8	0.040 8	29.99	0.97	3.45	1.71	-5.63
	4∶6	0.020 0	31.37	1.38	3.30	1.20	-7.34
	5∶5	0.020 0	31.40	0.96	3.42	1.73	0
	6∶4	0.032 4	31.32	0.93	3.51	1.79	0
	8∶2	0.020 0	32.43	0.89	3.70	1.87	0
	10∶0	0.014 0	36.23	1.17	3.04	1.42	0

n（N-AE_mS）∶n（TTAB）	N-AE₃S/TTAB		N-AE₅S/TTAB		N-AE₇S/TTAB		N-AE₉S/TTAB
n（N-AE_mS）∶n（TTAB）	D_short/ （m²·s^-1）	D_long/ （m²·s^-1）	D_short/ （m²·s^-1）	D_long/ （m²·s^-1）	D_short/ （m²·s^-1）	D_long/ （m²·s^-1）	D_short/ （m²·s^-1）	D_long/ （m²·s^-1）
0∶10	3.40×10^-14	4.21×10^-15	3.40×10^-14	4.21×10^-15	3.40×10^-14	4.21×10^-15	3.40×10^-14	4.21×10^-15
2∶8	2.64×10^-14	7.91×10^-17	3.57×10^-14	1.36×10^-15	6.59×10^-14	4.26×10^-15	2.56×10^-13	2.38×10^-15
5∶5	2.86×10^-14	6.44×10^-17	1.76×10^-14	2.89×10^-15	1.21×10^-13	5.33×10^-15	2.97×10^-13	7.75×10^-15
8∶2	6.98×10^-14	2.41×10^-15	1.14×10^-13	1.26×10^-14	1.57×10^-13	4.44×10^-15	2.56×10^-13	4.84×10^-15
10∶0	1.28×10^-13	2.91×10^-16	1.28×10^-13	6.28×10^-16	1.78×10^-13	4.01×10^-16	1.66×10^-13	9.22×10^-16

Study on the properties of the mixtures of sodium fatty alcohol ether sulfate with narrow ethylene oxide distribution and tetradecyltrimethylammonium bromide

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