微乳液
耗散颗粒动力学模拟
肺表面活性物质
乙醚
化学工程
表面张力
化学
相(物质)
材料科学
高分子化学
有机化学
热力学
聚合物
工程类
物理
作者
Haixia Zhang,Jiahui Xia,Chenguang Ding,Bin Xu,Shoulong Wang,Zongxu Wu,Weimin Zhao
标识
DOI:10.1016/j.pnsc.2023.08.001
摘要
The effect of polyoxyethylene chain length on the formation and temperature stability of W/O microemulsion emulsified by polyoxyethylene ether surfactant is investigated by dissipative particle dynamics simulation (DPD) on the mesoscopic level. The results show that W/O microemulsions can be formed by three polyoxyethylene chain length ether nonionic surfactants with decreasing the water-oil ratio equal to increasing the oil phase content. However, W/O microemulsion is most easily formed by diethylene glycol monododecyl ether (H1T2) with the smallest oxyethylene base. The results of temperature stability show that W/O microemulsion emulsified by H1T2 has better stability resistant to high or low temperature. In addition, the interfacial tension of the W/O microemulsion system is the lowest, the end-to-end distance of the surfactant molecule is smallest, and the molecular chain is the most curved at the water-oil interface. The theoretical simulation results can guide the formation of the W/O microemulsion induced by polyoxyethylene ether nonionic surfactant, and provide the guidance for its practical application.
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