摘要
采用电导率法及Tyndall效应研究了白油/(Span80+Tween60)/(丙烯酰胺+丙烯酸钠)水溶液体系,得到了一系列反相微乳液的拟三元相图。在40℃下,可以得到最大水相增溶量的HLB值为8 5,此时,单体丙烯酰胺 丙烯酸钠占油水两相的质量分数为20%。在反相微乳液中进行了丙烯酰胺 丙烯酸钠的聚合反应,考察了引发体系对产物HPAM相对分子质量的影响,得知(NH4)2S2O8 SO2为较好的引发体系。应用动态光散射和扫描电子显微镜(SEM)表征微乳液,得到微乳液中聚合物的平均粒径约60nm,而水溶液中聚合物的平均粒径为几百nm。
The system of isoparaffin/(Span80+Tween60)/acrylamide-sodium acrylate solution was studied by using the electrical conductivity method and Tyndall effect of the system. A series of inverse-microemulsion pseudo-ternary phase diagrams were obtained. The result showed that when the temperature was 40°C, the aqueous phase-to-oil phase ratio attained maximum at HLB=8.5, and the monomer mass fraction was higher than 20% at the maximum aqueous phase-to-oil phase ratio. Copolymerization of acrylamide-sodium acrylate was carried out in inverse microemulsion. The effect of initiators on the molecular mass of the product was investigated, indicating that (NH4)2S2O8/SO2 was the proper initiator for this system. The average diameter of the microemulsion and the diameter of the polymer in solution were determined by scanning electrical microscope and dynamic light scattering. The result showed that the average diameter of the microemulsion was less than 60 nm, while the average diameter of the in polymers microemulsion solution was several hundred nanometers.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2004年第1期40-45,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
