甲基甘氨酸二乙酸三钠对几种不同类型表面活性剂应用性能影响的研究

doi:10.3969/j.issn.2097-2806.2025.01.004

摘要/Abstract

摘要： 以Cu²⁺为探针，采用红外光谱法测试了表面活性剂脂肪醇聚氧乙烯醚羧酸钠（AEC-9Na）、十二烷基二苯醚二磺酸钠（2A1）、异构烷基糖苷（IC-06）、脂肪醇聚氧乙烯醚（AEO9）、椰油酰胺基丙基甜菜碱（CAB）、椰油酰胺丙基氧化胺（CAO）与甲基甘氨酸二乙酸三钠（MGDA）对Cu²⁺的螯合作用，通过透光率考察了6种表面活性剂对MGDA的表观耐盐性和体系稳定性，通过表面张力仪、接触角测量仪及泡沫分析仪研究了MGDA对6种表面活性剂的应用性能的影响。结果表明：绿色螯合剂MGDA对Cu²⁺具有优异的螯合作用，表面活性剂的加入促进了MGDA对Cu²⁺的螯合作用；所选择的6种表面活性剂均具有良好的耐盐性能，其中2A1和CAB的耐盐能力最强，分别可以达到50%和30%，且表面活性剂的亲水性越强，耐盐性越好；MGDA的加入对表面活性剂的表面活性影响不大；MGDA的加入提升了表面活性剂的润湿性，在保持表面活性剂浓度不变的条件下，随着MGDA浓度的增加，接触角呈现降低的趋势；MGDA的加入提升了表面活性剂的泡沫性能，起泡时间减小，6种表面活性剂在300 s内均呈现出良好的稳泡性能；采用透光率探究了表面活性剂对MGDA螯合作用的影响，结果表明2A1和CAB对脱除Cu²⁺的辅助作用最强。

关键词: Cu²⁺, 甲基甘氨酸二乙酸三钠, 表面活性剂, 螯合作用, 润湿, 泡沫

Abstract:

Using Cu²⁺ as a probe, the chelation of Cu²⁺ with trisodium methylglycine diacetate （MGDA） was tested by infrared spectroscopy in presence of different surfactants such as sodium fatty alcohol polyoxyethylene ether carboxylate （AEC-9Na）, sodium dodecyl diphenyl ether disulfonate （2A1）, iso-alkyl glycoside （IC-06）, fatty alcohol polyoxyethylene ether （AEO9）, cocamidopropyl betaine （CAB）, and cocamidopropyl amine oxide （CAO）. The apparent salt tolerance and system stability of these six surfactants in presence of MGDA were evaluated by light transmittance. The effects of MGDA on the application properties of the six surfactants were studied on a surface tensiometer, a contact angle tester and a foam analyzer. The results showed that the addition of surfactants promoted the chelation of MGDA to Cu²⁺. All these six surfactants had good salt resistance, among which 2A1 and CAB had the strongest salt resistance, which could reach 50% and 30%, respectively. The stronger the hydrophilicity of the surfactant, the better the salt tolerance. The addition of MGDA had sightly good effects on the surface activity of surfactants. The addition of MGDA improved the wetting ability of surfactants. Under the condition of constant surfactant concentration, the contact angle decreased with the increase of MGDA concentration. The addition of MGDA improved the foaming properties of the surfactants, and the foaming was faster. All the six surfactants showed good foam stability within 300 s. The effects of surfactants on MGDA chelation were investigated by light transmittance. The results showed that 2A1 and CAB had the strongest promoting effect on Cu²⁺ removal.

Key words: Cu²⁺, trisodium methylglycine diacetate, surfactant, chelation, wetting, foam

中图分类号:

TQ423

王娜娜, 台秀梅, 耿涛, 张梁, 李赛, 郭凌霄. 甲基甘氨酸二乙酸三钠对几种不同类型表面活性剂应用性能影响的研究[J]. 日用化学工业（中英文）, 2025, 55(1): 34-40.

Nana Wang, Xiumei Tai, Tao Geng, Liang Zhang, Sai Li, Lingxiao Guo. Study on the effects of trisodium methylglycine diacetate on the application properties of different types of surfactants[J]. China Surfactant Detergent & Cosmetics, 2025, 55(1): 34-40.

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