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

41 Scopus citations

Abstract

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
Volume80
Issue number12
DOIs
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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