A new interpretation of the optical interference figures observed in a lyotropic biaxial nematic phase for a ternary mixture of DTMABr, 1-DDeOH and H2O
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Tarih
2022
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info:eu-repo/semantics/closedAccess
Özet
The lyotropic ternary mixture of dodecyltrimethylammonium bromide (DTMABr), 1-dodecanol (DDeOH) and water (H2O) was studied by optical conoscopy and Abbe refractometer techniques. The present mixture showed a large biaxial phase domain (N-B) located between two different uniaxial ones in the partial phase diagram, one optically positive (N-D) and the other negative (N-C). The N-B phase exhibits two optic signs as a function of the temperature, each of which was equal to the neighboring uniaxial phases. The temperature dependence of the refractive indices was measured along the N-C - N-B - N-D phase transitions. In addition, we are reporting for the first time a new interpretation of the optical interference figures observed along the N-B phase.
Açıklama
We are thankful to the following Brazilian Agency: National Institute of Science and Technology Complex Fluids (INCT-FCx) for the financial support. EA would also like to thank the Scientific and Technological Research Council of Turkey (TUB_ITAK) [grant number: 120Z209].
Anahtar Kelimeler
Lyotropic Biaxial Nematic, Optic Sign, Conoscopic Figure, Refractive Index, Transitions, Behavior
Kaynak
Journal of Molecular Liquids
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
366
Sayı
Künye
Lüders, D. D., Akpinar, E., & Kimura, N. M. (2022). A new interpretation of the optical interference figures observed in a lyotropic biaxial nematic phase for a ternary mixture of DTMABr, 1-DDeOH and H2O. Journal of Molecular Liquids, 366, 120108.
