Hyperbranched poly(amido amine) demulsifier (PDDM) was synthesized by a modified “one‐pot” method with 4,4‐diaminodiphenyl methane as the central core and ethylenediamine as the interior branches. The structure of the demulsifier was confirmed by proton nuclear magnetic resonance and Fourier transform infrared. The effects of the temperature and PDDM concentration on the demulsification performance were investigated, and PDDM performance was compared to that of the hyperbranched demulsifier with 1,3‐propanediamine as the central core. When the emulsions were treated with the demulsifier concentration of 50 mg L⁻¹ at 60 °C for 120 min, the light transmittance and removed total organic content of the aqueous phase reached 87.4 and 99.72%, respectively. At the optimal demulsification temperature of 60 °C, the surface tension reduction and the critical micelle concentration were 27.38 mN m⁻¹ and 1.30 × 10⁻³ mol L⁻¹, respectively. The combination of surface tension and interfacial tension measurements and the analysis of micrographs and particles sizes provide evidence for the possible demulsification mechanism. The excellent demulsification performance of the hyperbranched demulsifier indicates that it has great potential for use in the demulsification of oil‐in‐water emulsions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48846.

中文翻译：

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使用以4,4-二氨基二苯基甲烷为初始核的超支化聚（酰胺胺）破乳剂对水包油乳液进行破乳

采用改进的“一锅法”合成了超支化聚（酰胺胺）破乳剂（PDDM），其中4,4-二氨基二苯甲烷为中心核，乙二胺为内部支链。破乳剂的结构通过质子核磁共振和傅立叶变换红外光谱确定。研究了温度和PDDM浓度对破乳性能的影响，并将PDDM性能与以1,3-丙二胺为中心的超支化破乳剂的性能进行了比较。当用破乳剂浓度为50 mg L ^-1处理乳液时在60°C下120分钟，水相的透光率和去除的总有机物含量分别达到87.4和99.72％。在最佳破乳温度为60°C时，表面张力降低和临界胶束浓度分别为27.38 mN m ^-1和1.30×10 ^-3 mol L ^-1。表面张力和界面张力测量值的结合以及显微照片和颗粒尺寸的分析为可能的破乳机理提供了证据。超支化破乳剂的优异破乳性能表明，它在水包油乳化液的破乳方面具有巨大的潜力。分级为4 +©2019 Wiley Periodicals，Inc.J.Appl。Polym。科学 2020年，137，48846。