STUDY OF THE INTERFACIAL TENSION OF WATER/KEROSENE WITH ADDED AP TYPE DEMUISIFIERS

The interfacial tension of water/kerosene with added AP type polyoxyethylene-polyoxypropylene block copolymers has been determined, as a function of concentration of copolymer at 298K and as a function of temperature at fixed content of copolymer. The result shows that the AP type polyoxyethylene-polyoxypropylene block copolymers exhibit a high interfacial activity.The effects of EO content and PO distribution in the AP type copolymers have been investigated. At low concentrations a linear decrease of my as increasing of 1n(c + 1) was observed. The interfacial tension decreases with increasing temperature sharply. Primary experiments indicate that the AP type copolymers are very effective demulsifiers. The relation between interfacial tension and demulsification effect on several sources of crude oils has also been discussed.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000207568200003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Chemistry, PhysicalSCI(E)0ARTICLE6511-516