Abstract:

 A novel series of polymeric surfactants were prepared by ultrasonic copolymerization of carboxy methyl cellulose (CMC) and alkyl poly(etheroxy) acrylate. The adsorption conformation of polymeric surfactants based on CMC at silica gel/water interface was studied by the adsorption isotherms, UV and XPS. The results show that the adsorptive amount goes up steadily with the increasing of copolymer concentration, and the hydrophilic chains, CMC and poly(etheroxy) segments, adsorb to the surface of silica gel. After the critic micellar concentration of polymeric surfactants, the hemi-micelles are formed through the hydrophobic interaction between molecules adsorbed on the solid surface and those in solution.

Key words: Polymer surfactant, Carboxy methyl cellulose, Adsorption conformation, Solid/liquid interface