Confinement effects induced by a solubilized polymer on the micellar nematic-lamellar transition
- 8 June 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 68 (23), 3436-3439
- https://doi.org/10.1103/physrevlett.68.3436
Abstract
We studied the effect of polyethylene-oxide (PEO, molecular weight from to 4×) dissolved in the micellar nematic (N) and lamellar (L) phases of the surfactant system cesium perfluoro-octanoate (CsPFO) water by microscopy and calorimetry. Replacement of water by PEO suppresses the lamellar phase above a critical concentration () which depends on the molecular weight of the polymer by a power law. In a limited range below a reentrant nematic is observed. The N-L transitions become less sharp with increasing concentration. The observed effects are due to the disruption of the lamellar order by the polymer.
Keywords
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