Confinement of polysoaps in membrane lyotropic phases

Y. Yang, R. Prudhomme, K. M. McGrath, P. Richetti, C. M. Marques

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


We study the confinement of polysoaps in lyotropic smectic (Lα) and sponge (L3) solutions of the nonionic surfactant pentaethylene glycol dodecyl ether (C12EO5). The polysoap is a hydrophobically modified polymer with n-tetradecyl sidegroups randomly grafted to a polyacrylate backbone. Without the hydrophobic side chains the backbone polymer cannot be embedded into the intermembrane space, but confinement is achieved for a polysoap with as low as 1% of grafted groups. We measure by small angle x-ray and neutron scattering an increase of the bending rigidity of the lamellar membranes as a function of polysoap concentration.

Original languageEnglish (US)
Pages (from-to)2729-2732
Number of pages4
JournalPhysical review letters
Issue number12
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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