Improvement of Ca2+-tolerance by the introduction of EO groups for the anionic surfactants: Molecular dynamics simulation
作者： Yijian Chen , Guiying Xu
DOI: 10.1016/J.COLSURFA.2013.02.026
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摘要: The influence of Ca2+ on the aggregation of sodium dodecyl sulfate (SDS), sodium dodecyl oxyethylene sulfate (SDES), sodium dodecyl benzene sulfate (SDBS) and sodium dodecyl benzene oxyethylene sulfate (SDBES) at air–water interface were compared to investigate the role of oxyethylene unit by means of the molecular dynamics simulation. In the SDES and SDBES systems, the interaction between OSO3− groups and Na+ ions decreases, the diffusion coefficient of Na+ increases, while the interaction between surfactants and Ca2+ …
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