十二烷基硫酸钠/聚氧乙烯体系饱和蒸汽压和表面张力

• 作 者: 海明潭 高洁 韩布兴 闫海科 刘芸 韩其勇
• 机 构: 北京科技大学理化系!北京100083,清华大学化学系!北京100084,中国科学院化学研究所!北京100080,中国科学院化学研究所!北京100080,清华大学化学系!北京100084,北京科技大学理
• 出 处: 物理化学学报
• 发表日期: 1998年08期
• 关键词: 聚氧乙烯 饱和蒸汽压 聚合物体系 粘度法 单体的 活度系数 缔合 分子间相互作用 核磁共振法 张力曲线

Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sill-fate(SDS)/polyethylene oxide(PEO) were measured at 298.15, 308.15 and 318.15K respectively, the coucentration of PEO was 0.5%, and the concentration of SDS (mnsds ) was up to 80 mmol.kg-1 The activity coefficient of water at different temperatures was calculated. The effcct of intermolecular interactions on the vapour pressure was discussed. From vapo pressure and surface tension data, the critical aggregate concentration (CAC) and polymer saturation point (PSP) were ob-tained.

Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sill-fate (SDS) / polyethylene oxide (PEO) were measured at 298.15, 308.15 and 318.15 K respectively, the coucentration of PEO was 0.5%, and the concentration of SDS The effcct of intermolecular interactions on the vapor pressure was discussed. From vapo pressure and surface tension data, the critical aggregate concentration (CAC) and polymer saturation point (PSP) were ob-tained.