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《China Surfactant Detergent & Cosmetics》 2007-01
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Study of synthesis and properties of dendritic polyether surfactants

YU Fei,LI Jie,ZHANG Shu-yan,WANG Jun(School of Chemistry and Chemical Engineering,Daqing Petroleum Institute,Daqing 163318,China)  
A series of two block dendritic polyether surfactants(DPE)were synthesized through addition reaction of ethylene oxide and propylene oxide to the initiator polyamido-amine(PAMAM)with 1.0G ethylenediamine as core under the help of catalyst KOH.The hydroxyl values of the polyether surfactants were measured by end group titration;and the calculation of their molecular weight were based upon their corresponding theoretical molecular structure.Surface tension of these(dendritic) polyethers were measured by ring method.The relationships between the structures and the surface activity of these(dendritic) polyethers were discussed.The experiment results showed that such type of polyether surfactants has good surface activity.As the EO/PO ratio decreases and the relative PO content increases,the surface activity of the polyether is enhanced.The change of surface activity of the polyether surfactants with the same EO/PO ratio but with different molecular weight is not(significant).
【CateGory Index】: TQ423.2
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