Discotic Nematic - Calamitic Nematic Phase Transition in Sodium Dodecyl (lauryl) Sulphate-Decanol-D2O

被引：3
|
作者：
Oliveira, D. A. [1 ,2 ]
Palangana, A. J. [1 ]
Amaral, L. Q. [3 ]
机构：
[1] Univ Estadual Maringa, Dept Phys, BR-87020900 Maringa, Parana, Brazil
[2] Fed Technol Univ Parana, Campo Mourao, Parana, Brazil
[3] Univ Sao Paulo, Inst Phys, BR-05508 Sao Paulo, Brazil
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2011年 / 547卷
基金：
巴西圣保罗研究基金会;
关键词：
Lyotropic uniaxial nematic phases; phase coexistence; refractive index; MIXTURES; SULFATE;
D O I：
10.1080/15421406.2011.572054
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The optical characterization of uniaxial nematic liquid crystals gives basic information on its birefringence and on the shape anisotropy of micelles in nematic lyotropic phases. In this work, these optical parameters were determined as a function of temperature along the sequence discotic nematic (ND) - coexistence (ND+NC) - calamitic nematic (NC) - isotropic (I) in a lyotropic mixture of the sodium dodecyl (lauryl) sulphate (SDS) - decanol (DeOH) and D2O for a specific concentration. Results for the uniaxial phases agree with previous assignments. Results in the coexistence region indicate an inhomogeneous mixture of the two uniaxial phases.
引用
收藏
页码：195 / 200
页数：6
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