TY - JOUR
T1 - Confinement of polysoaps in nonionic surfactant lyotropic bilayers
AU - Yang, Y.
AU - Prud'homme, R.
AU - Richetti, P.
AU - Marques, C. M.
PY - 1999
Y1 - 1999
N2 - We study the confinement of hydrophobically modified polyacrylate (HMPA) in lamellar (Lα) and sponge (L3) phases of a ternary lyotropic system, comprising n-dodecyl pentaethylene glycol monoether (C12EO5), hexanol and brine. The unmodified polymer cannot be inserted into the membrane solution, but the confinement of HMPA can be achieved with a sufficient amount of hydrophobe substitution. The resulting stapled polymer structure induces pronounced changes in the phase behavior of the surfactant solution as well as in the membrane properties. Neutron scattering and visual observation were used to obtain phase diagrams and information on membrane properties. We found that the confinement of HMPA 1) induces two new phases: a vesicle-like phase and two coexisting Lα phases, 2) reduces the monophasic Lα, area, and 3) increases the rigidity of the bilayers. The effects of the hydrophobe substitution level and polymer concentration are systematically explored.
AB - We study the confinement of hydrophobically modified polyacrylate (HMPA) in lamellar (Lα) and sponge (L3) phases of a ternary lyotropic system, comprising n-dodecyl pentaethylene glycol monoether (C12EO5), hexanol and brine. The unmodified polymer cannot be inserted into the membrane solution, but the confinement of HMPA can be achieved with a sufficient amount of hydrophobe substitution. The resulting stapled polymer structure induces pronounced changes in the phase behavior of the surfactant solution as well as in the membrane properties. Neutron scattering and visual observation were used to obtain phase diagrams and information on membrane properties. We found that the confinement of HMPA 1) induces two new phases: a vesicle-like phase and two coexisting Lα phases, 2) reduces the monophasic Lα, area, and 3) increases the rigidity of the bilayers. The effects of the hydrophobe substitution level and polymer concentration are systematically explored.
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U2 - 10.1021/bk-1999-0736.ch011
DO - 10.1021/bk-1999-0736.ch011
M3 - Article
AN - SCOPUS:0042412386
SN - 0097-6156
VL - 736
SP - 169
EP - 179
JO - ACS Symposium Series
JF - ACS Symposium Series
ER -