Effect of alkyl glycosides and alcohol ether glycosides on interfacial tension of Liaohe viscous oil
The effects of alkyl glycoside and alcohol ether glycoside alone on the interfacial tension be-tween n-alkanes and Liaohe crude oil and on the interfacial tension in a composite system were studied by using a rotary drop interfacial tensimeter with the addition of ethylene oxide group(EO).The effects of mass fraction of surfactant,concentration of univalent and bivalent ions and EO group on dynamic interfa-cial tension of the system were investigated.The results show that the two glycoside surfactants can pro-duce strong synergistic effect with sodium dodecylbenzene sulfonate,and the EO chain can adjust the hy-drophilic and oleophilic balance of the surfactants,so that the surfactants are more closely arranged at the interface.The increase of salinity can compress the double electron layer,make the interfacial molecules closely arranged,and reduce the interfacial tension.Under proper salinity conditions,the mixed surfactant system can produce ultra-low interfacial tension with Liaohe viscous oil.
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维普
