New amphiphilic polymeric surfactants, possessing a controlled ratio of alternating hydrophilic and hydrophobic blocks in a backbone chain, were designed using pseudo-poly(amino acids). Lipophilic fragments of surfactant macromolecules were synthesized through N-acylation of glutamic acid residues in reaction with saturated fatty acid, and further combining with poly(propylene oxide) sequences of differing length. Hydrophilic fragments of surfactants are based on poly(ethylene oxide) moieties with differing length. Hydrophilic lipophilic balance of the surfactants can be controlled by ratio of lipophilic fragments and length of poly(ethylene oxide) moieties. It is expected that due to presence of two different lipophilic fragments, the segmental mobility of the backbone chain increases.  In addition, invertible (responsive) properties will be introduced to the macromolecules of surfactant, due to alternating hydrophilic and hydrophobic fragments in a backbone chain. Surface tension data on pseudo-poly(amino acids)-based macromolecules confirmed the surface activity and micellization of new surfactants.

New polymeric surfactants made of pseudo–poly(amino acids)

243rd National Meeting (2012)

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