CONFINEMENT EFFECTS INDUCED BY A SOLUBILIZED POLYMER ON THE MICELLAR NEMATIC-LAMELLAR TRANSITION

被引：16

作者：

KUZMA, MR ^{[1
]}

WEDLER, W ^{[1
]}

SAUPE, A ^{[1
]}

SHIN, S ^{[1
]}

KUMAR, S ^{[1
]}

机构：

[1] KENT STATE UNIV,DEPT PHYS,KENT,OH 44242

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.68.3436

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We studied the effect of polyethylene-oxide (PEO, molecular weight from 10(5) to 4 x 10(6)) 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 (w(c)) which depends on the molecular weight of the polymer by a power law. In a limited range below w(c) 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.

引用

页码：3436 / 3439

页数：4

共 13 条

[1]

[Anonymous], 1983, PHASE TRANSITIONS CR

[2] LAMELLAR NEMATIC TRICRITICAL BEHAVIOR IN LYOTROPIC LIQUID-CRYSTALS [J].