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Influence of pH and cationic surfactant on stability and interfacial properties of Algerian bitumen emulsion

机译:pH和阳离子表面活性剂对阿尔及利亚沥青乳液稳定性和界面性能的影响

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摘要

The influence of water pH and cationic surfactant content on the interfacial properties and stability of an Algerian bitumen aqueous emulsion were investigated. While the stability was quantified by both the test-bottle method and size distribution measurements, the interfacial properties of the water-bitumen interface were assessed using interfacial tension measurements. Optical microscopy was also used to visualise the dispersed water droplets in the oil phase. The results showed that addition of the cationic surfactant at a concentration of 25 mmol L-1 in acidic water (pH 2) improves the bitumen emulsion stability and effectively decreases the interfacial tension. (c) 2016 Institute of Chemistry, Slovak Academy of Sciences
机译:研究了水的pH值和阳离子表面活性剂含量对阿尔及利亚沥青水乳液的界面性能和稳定性的影响。通过测试瓶法和尺寸分布测量对稳定性进行了定量,同时使用界面张力测量对水沥青界面的界面性质进行了评估。光学显微镜还用于观察油相中分散的水滴。结果表明,在酸性水(pH 2)中以25 mmol L-1的浓度添加阳离子表面活性剂可改善沥青乳液的稳定性,并有效降低界面张力。 (c)斯洛伐克科学院2016年化学研究所

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