BS-12改性蒙脱土的制备及其稳定的Pickering乳液的研究

doi:10.3969/j.issn.1001-1803.2020.03.007

摘要/Abstract

摘要：

以十二烷基二甲基甜菜碱（BS-12）为改性剂对蒙脱土（MMT）进行改性,得到十二烷基二甲基甜菜碱改性蒙脱土（BS-12/MMT）。对BS-12/MMT进行红外（FT-IR）、X射线粉末衍射（XRD）表征,测量了改性蒙脱土的三相接触角。设计了L₉（3 ⁴）正交试验,对BS-12/MMT稳定的Pickering乳液的各组分含量和工艺进行优化,并对优化后的结果进行了离心稳定性、静置稳定性验证实验,测量了优化后乳液的粒径分布。结果表明,BS-12/MMT含量为4%,油水质量比为1∶1,AEO-3含量为1%,乳化时间为10 min,有利于维持乳液的稳定。优化后的乳液粒径分布窄,有利于乳液的长期稳定。

关键词: 蒙脱土, 十二烷基二甲基甜菜碱, Pickering乳液, 稳定性

Abstract:

The dodecyl dimethyl betaine modified montmorillonite （BS-12/MMT） was prepared using dodecyl dimethyl betaine （BS-12） as modifier. The BS-12/MMT was characterized by Fourier transform infrared spectroscopy （FT-IR）, X-ray diffraction （XRD） and the three-phase contact angle measuring instrument. An L₉（3 ⁴） orthogonal experiment was designed to optimize the content of each component and preparation process of the BS-12/MMT stabilized Pickering emulsion. The optimized results were verified by centrifugal stability and static stability experiments. The particle size distribution of the emulsions was measured by the Zeta Plus particle size analyzer. The results show that the BS-12/MMT content is 4%, the oil-water mass ratio is 1∶1, the AEO-3 content is 1%, and the emulsification time is 10 min, which is more conductive to maintaining the stability of the BS-12/MMT stabilized Pickering emulsion. The optimized emulsion particle size distribution is narrow, which is beneficial to the long-term stability of the emulsion.

Key words: montmorillonite, dodecyl dimethyl betaine, Pickering emulsion, stability

中图分类号:

TQ423

杨泽宇,王万绪,王国永,台秀梅. BS-12改性蒙脱土的制备及其稳定的Pickering乳液的研究[J]. 日用化学工业, 2020, 50(3): 177-181.

Ze-yu YANG,Wan-xu WANG,Guo-yong WANG,Xiu-mei TAI. Preparation of modified montmorillonite by BS-12 and application in Pickering emulsion[J]. China Surfactant Detergent & Cosmetics, 2020, 50(3): 177-181.

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水平	因素
水平	A BS-12/MMT含量/%	B 油水质量比	C AEO-3含量/%	D 乳化时间/min
1	0.5	2∶1	0	5
2	1	1∶1	0.5	10
3	4	1∶2	1	20

因素	A	B	C	D	乳液相体积分数/%
1	0.5	2∶1	0	5	37.50
2	0.5	1∶1	0.5	10	46.43
3	0.5	1∶2	1	20	34.38
4	1	2∶1	0.5	20	65.23
5	1	1∶1	1	5	72.73
6	1	1∶2	0	10	46.15
7	4	2∶1	1	10	100.00
8	4	1∶1	0	20	90.91
9	4	1∶2	0.5	5	60.86
k₁	39.437	67.577	58.187	57.030
k₂	61.370	70.023	57.507	64.193
k₃	83.923	47.130	69.037	63.507
R	44.486	22.893	11.530	7.163

样品编号	离心稳定性	静置稳定性	耐热稳定性	耐寒稳定性
1	无相分离现象	无相分离现象	无相分离现象	无相分离现象
2	无相分离现象	无相分离现象	无相分离现象	无相分离现象
3	无相分离现象	无相分离现象	无相分离现象	无相分离现象