摘要
为了定量研究阴离子表面活性剂十二烷基磺酸钠（SLS）、十二烷基硫酸钠（SDS）和十二烷基苯磺酸钠（SDBS）对水合反应物HCFC141b与水两相界面张力的影响，利用圆环法分别测定了8．4～20℃HCFC141b的表面张力及HCFC141b与蒸馏水、2450ppm SLS溶液、2470ppm SDS溶液和576ppm SDBS溶液之间的两相界面张力．实验结果表明：在水中分别添加2450ppm的SLS、2470ppm的SDS和576ppm的SDBS后，HCFC141b／水溶液的界面张力分别降低为HCFC141b／蒸馏水界面张力的37％～62％，15％～19％和9％～12％．相同温度下，576ppm的SDBS对水／HCFC141b两相界面张力的改善效果最好．
In order to quantitatively study the effect of anionic surfactants on the interracial tension of gas hydrate formers, the surface tensions of pure water and HCFC141b and the interracial tensions of HCFC141b/distilled water, HCFC141b/sodium laurysulfonate（SLS） solution of 2 450 ppm, HCFC141b/ sodium dodecyl sulfate （SDS） solution of 2 470 ppm, HCFC141b/sodium dodecylbenzenesulfonate （$DBS） solution of 576 ppm, were measured by Ring method in the temperature range of （8.4 to 20） ℃. The results show that the interracial tension of HCFC141b/water can be reduced to 37%-62%, 15%-19% and 9%-12%, when 2 450 ppm SLS, 2 470 ppm SDS and 576 ppm SDBS was added into the water respectively. Compared with the other two anion surfactants, at the same temperature, sodium dodecylbenzenesulfonate is the better one in reducing the interracial tension of HCFC141b/water.
基金
国家自然科学基金(50606015)
甘肃省自然科学基金(3ZS062-B25-32
3ZS042-B25-030)资助
