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

摘要/Abstract

摘要：

利用气体三氧化硫（SO₃）作为硫酸化试剂通过硫酸化窄分布脂肪醇醚合成窄分布脂肪醇醚硫酸钠（N-AE_mS）,并利用红外光谱（FT-IR）和核磁共振氢谱（ ¹H NMR）对其进行结构表征。随后通过测量N-AE_mS、十四烷基三甲基溴化铵（TTAB）以及N-AE_mS/TTAB（m=3,5,7和9）复配体系的静态表面张力、接触角和动态表面张力对其性能进行研究。结果表明,与单一表面活性剂相比,N-AE_mS/TTAB（m=3,5和7）复配体系可以提高表面活性。N-AE₉S因含有较多的聚氧乙烯基团（EO）致使其与TTAB之间几乎不存在协同作用。N-AE_mS/TTAB（m=3,5,7和9）复配体系的扩散性能较N-AE_mS（m=3,5,7和9）几乎没变化,且均为混合动力控制机理。

关键词: 窄分布聚氧乙烯基, 脂肪醇醚硫酸钠, 复配性能, 构效关系, 吸附机理

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

中图分类号:

TQ423

王新刚,杨效益,孙永强,郭朝华,李萍,李建波. 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[J]. 日用化学工业, 2019, 49(8): 485-491.

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.

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参考文献 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