Preparation and properties of water-soluble polyester surfactants. I. Preparation and surface activity of poly(ethylene glycol)-dimethyl 5-sulfo-isophthalate sodium salt polyester surfactants
Abstract
The reaction of poly(ethylene glycol) (PEG, number-average molecular weight Mn = 400-2000) and dimethyl 5-sulfoisophthalate sodium salt (SIPM) synthesized a series of anionic polymeric surfactants having a range of molecular weights. 1H-NMR, FTIR, and elemental analysis were employed to characterize the structures of these compounds. Also, the influences of the PEG segment lengths of PEG/SIPM copolymers on the surface tension, foaming properties, wetting power, and dispersant properties were investigated. The experimental results indicated that the solution that contained the PEG/SIPM copolymer surfactants exhibited excellent surface-active properties. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2727–2731, 2002
