摘要
采用电导法和相体积法相结合,并借助相图、黏度、光学显微镜,研究了Span80-Tween60/白油/丙烯酰胺/丙烯酸钠/H2O体系形成反相微乳液的过程,以及表面活性剂Span80与Tween60质量比、温度、乙酸钠对体系形成反相微乳液区的影响.结果表明,体系中表面活性剂质量分数小于20%时,电导法与相体积法确定的反相微乳液区边界基本一致;表面活性剂质量分数大于20%时,两方法确定的反相微乳液区边界相差甚远.说明仅由电导率突变不能准确确定反相微乳液区的边界,必须与相体积法相结合来共同确定相区的边界.当质量比m(Span80):m(Tween60)=13:7、温度为25～30℃、乙酸钠质量分数为2%时,体系能形成比较大的反相微乳液区,适合进行微乳液聚合.
The process of inverse microemulsion formed from Span80-Tween60/white oil/acrylamide/sodium acrylate/H2O system was investigated by the conductivity method, phase volume method, phase diagrams, viscosity, and optical microscope. The results showed the inverse microemulsion area boundaries determined separately with conductivity method or with phase volume method were consistent with each other when the mass fraction of surfactant in system was lower than 20%, the microemulsion boundaries determined with the conductivity method were observed far apart from the microemulsion boundaries. This indicated that the boundaries are to be determined by the combination of conductivity method and phase volume method rather than to use the conductivity method only. Under m(Span80):m(Tween60) of 13:7, θ of 25-30°C and w(Sodiurn acetate) of 2%, the system formed relatively larger inverse microemulsion area which was suitable for microemulsion polymerization.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2005年第1期43-48,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
丙烯酰胺
丙烯酸钠
反相微乳液
电导法
相体积法
Microemulsions
Optical microscopy
Phase diagrams
Polymerization
Surface active agents
Viscosity
