Inverse emulsions based on acrylamide (AA), acrylonitrile (AN), and 2-acrylamide-2-methylpropanesulfonic acid (AMPS), and their polymers have been obtained using surfactant mixture containing Span 80 and Tween 80. The stability of these monomer and polymer inverse emulsions has been studied. Ionic monomers, AA and AMPS, have been found to give a significant contribution to the emulsion stability. The effect has been close to that of Tween 80, i.e., hydrophilic-lipophilic balance (HLB) has been improved. The spinning drop method has been used for the study of interfacial tension (IFT) kinetics. The parameters of the inverse emulsions, including ionogenic monomer concentration, have been found to change the IFT kinetics pattern. The onset of IFT equilibrium has been shown to be comparable to the duration of radical copolymerization. AA-AN-AMPSNa terpolymer was synthesized via radical copolymerization in inverse emulsion. No significant effect of radical terpolymerization on the average particle size and stability of inverse emulsions has been observed.

Graphical abstract

中文翻译：

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分散体系在离子型丙烯酸酯单体反相乳液聚合中的稳定性

使用含有Span 80和Tween 80的表面活性剂混合物可获得基于丙烯酰胺（AA），丙烯腈（AN）和2-丙烯酰胺-2-甲基丙烷磺酸（AMPS）的反相乳液及其聚合物。这些单体和聚合物的稳定性已经研究了反相乳液。已发现离子型单体AA和AMPS对乳液的稳定性起着重要作用。该效果已经接近吐温80的效果，即亲水亲脂平衡（HLB）得到了改善。纺丝滴法已用于研究界面张力（IFT）动力学。已经发现反相乳液的参数，包括离子单体浓度，可以改变IFT动力学模式。已经显示出IFT平衡的发生与自由基共聚的持续时间相当。通过反相乳液中的自由基共聚反应合成了AA-AN-AMPSNa三元共聚物。尚未观察到自由基三元聚合对反相乳液的平均粒径和稳定性的显着影响。

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