仲辛醇乳液的制备及电解质对其稳定性的影响机理
发布时间：2018-12-30 18:29
【摘要】：以司盘80、吐温80和油酸钠为乳化剂,采用高剪切乳化法制备仲辛醇乳液,通过单因素试验和响应面优化试验探索了制备仲辛醇乳液的最佳工艺条件,并研究了电解质对乳液稳定性的影响,依据DLVO理论分析了电解质对乳液稳定性的作用机理。试验结果表明:制备乳液的最佳工艺为剪切时间8 min,剪切速率4 530 r/min,乳化剂用量4.9%,仲辛醇含量34.8%,所得乳液平均粒径为(208±1)nm。电解质具有破乳作用,随电解质浓度增加,乳化油珠间静电排斥作用减小,位能曲线势垒降低甚至消失,油珠聚并,粒径增大,乳液趋于不稳定甚至破乳;阳离子价态越高,破乳作用越强。
[Abstract]:The secondary octanol emulsion was prepared by high shear emulsification with Span 80, Tween 80 and sodium oleate as emulsifiers. The optimum process conditions for the preparation of secondary octanol emulsion were investigated by single factor test and response surface optimization test. The effect of electrolyte on emulsion stability was studied, and the mechanism of electrolyte action on emulsion stability was analyzed based on DLVO theory. The results showed that the optimum conditions were as follows: shear time 8 min, shear rate 4 530 r / min, emulsifier dosage 4. 9%, secondary octanol content 34. 8%, and the average particle size of the emulsion was (208 卤1) nm.. The electrolyte has demulsification effect. With the increase of electrolyte concentration, the electrostatic repulsion between emulsified oil beads decreases, the potential energy curve barrier decreases or even disappears, the oil beads coalesce, the particle size increases, and the emulsion tends to be unstable or even demulsified. The higher the cationic valence, the stronger the demulsification effect.
【作者单位】： 中国矿业大学(北京)化学与环境工程学院;
【基金】：国家重点基础研究发展计划(973)资助项目(2012CB214901) 国家自然科学基金青年基金资助项目(51404274)
【分类号】：TD923.12;TD94
本文编号：2395966
[Abstract]:The secondary octanol emulsion was prepared by high shear emulsification with Span 80, Tween 80 and sodium oleate as emulsifiers. The optimum process conditions for the preparation of secondary octanol emulsion were investigated by single factor test and response surface optimization test. The effect of electrolyte on emulsion stability was studied, and the mechanism of electrolyte action on emulsion stability was analyzed based on DLVO theory. The results showed that the optimum conditions were as follows: shear time 8 min, shear rate 4 530 r / min, emulsifier dosage 4. 9%, secondary octanol content 34. 8%, and the average particle size of the emulsion was (208 卤1) nm.. The electrolyte has demulsification effect. With the increase of electrolyte concentration, the electrostatic repulsion between emulsified oil beads decreases, the potential energy curve barrier decreases or even disappears, the oil beads coalesce, the particle size increases, and the emulsion tends to be unstable or even demulsified. The higher the cationic valence, the stronger the demulsification effect.
【作者单位】： 中国矿业大学(北京)化学与环境工程学院;
【基金】：国家重点基础研究发展计划(973)资助项目(2012CB214901) 国家自然科学基金青年基金资助项目(51404274)
【分类号】：TD923.12;TD94
【相似文献】
相关期刊论文 前3条
1 吴多才;起泡剂——仲辛醇[J];有色金属(选矿部分);1981年05期
2 方和平;鳞片石墨浮选高效起泡剂——仲辛醇的试验研究[J];矿冶工程;1988年03期
3 谢云生;仲辛醇选铜试验[J];有色金属(选矿部分);1981年03期
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