摘要
金属阳离子是影响阴离子起泡剂性能的重要因素之一。本文基于不同金属阳离子与十二烷基硫酸钠(SDS)溶液体系,研究了阳离子对十二烷基硫酸钠起泡性能及界面性质的影响。利用泡沫扫描仪对不同体系中的SDS溶液起泡能力和泡沫稳定性进行了分析,利用图像分析法对泡沫的形态、直径和分布进行了统计分析,借助界面张力和流变仪对不同体系的界面黏弹性进行了测试分析。结果表明:阳离子可以降低SDS溶液体系的起泡能力,其影响大小顺序为Al^(3+)>Mg^(2+)>Na^(+);泡沫的半衰期随着Na^(+)和Mg^(2+)浓度的增加先减小后趋于平缓,而随着Al^(3+)离子浓度的增加先减小后增大再后趋于平缓;Al^(3+)对泡沫结构的不利影响远大于Na^(+)和Mg^(2+);Al^(3+)使泡沫直径降低的能力最大;复合溶液表面膜是黏弹性的,各阳离子影响扩张模量的能力顺序为:Al^(3+)>Mg^(2+)>Na^(+)。
Metal cations are one of the important factors affecting the performance of anionic foaming agent. In this paper,based on the different metal cations with sodium dodecyl sulfate( SDS) solution system,the influence of cations on foaming characteristics and interfacial properties of sodium dodecyl sulfate were investigated. The foaming ability and foam stability of different SDS solution systems were analyzed by foam scanner. The foam morphology,diameter and distribution were statistical analyzed by image analysis method. By utilizing of interfacial tension/rheometer,and the interfacial viscoelasticity were tested. The results showed that the cations can reduce the foaming ability and the influence order is Al^(3+)> Mg^(2+)> Na^(+). The half-life of foam decreased firstly and then tends to be gently with the increase concentration of Mg^(2+)and Na^(+),but the half-life of foam decreased firstly and then increased,finally tends to be gentle with the increase of Al^(3+). The adverse effect of Al^(3+)on the foam structure is much larger than that of Na^(+)and Mg^(2+). The ability of Al^(3+)which reduce the foam diameter significantly. The composite solution surface is viscoelastic,and the effects of cations on dilational modulus is Al^(3+)> Mg^(2+)> Na^(+).
出处
《矿业科学学报》
2018年第1期76-83,共8页
Journal of Mining Science and Technology
基金
矿物加工科学与技术国家重点实验室开放研究基金(BGRIMM-KJSKL-2015-03)
国家自然科学基金青年科学基金(51604280)
中国博士后科学基金面上项目(2017M611045)
关键词
十二烷基硫酸钠
起泡性能
半衰期
扩张模量
sodium dodecyl sulfate
foaming property
half-life
dilational modulus
