Study of phase transitions of binary liquid crystalline mixtures

D. Ž Obadović, A. Vajda, M. Stančić, D. Lazar, K. Fodor-Csorba, L. Bata

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

We present the results of study of binary mixtures of 4′-n-heptyloxyphenyl-4-n-octyloxy benzoate and 4′-(2-methylbutyl)phenyl 4-(n-heptylbiphenyl)carboxylate and 4′-n-pentylphenyl-4-(n-decyloxy)thiobenzoate. Phase diagrams of binary mixtures are formed on the basis of data obtained by the optical microscopy. It was established that the phase transition temperatures for binary mixtures are shifted significantly towards the direction of lower temperature ranges by 6-20 °C with respect to initial components. The mixtures exhibit nematic, smectic A, C, and B phases in a broader temperature range than that of the individual compounds. We have identified the presence of enantiotropic smectic G phase close to room temperature. X-ray diffraction data on non-oriented samples have enabled the characterization of the structure and calculation of the molecular parameters: the layer spacings (d) and the average intermolecular distances (D) in nematic, smectic A, C, B, and G phases.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publ
Volume321
Publication statusPublished - 2000
EventProceedings of the 1998 6th European Powder Diffraction Conference (EPDIC 6) - Budapest, Hung
Duration: Aug 22 1998Aug 25 1998

Other

OtherProceedings of the 1998 6th European Powder Diffraction Conference (EPDIC 6)
CityBudapest, Hung
Period8/22/988/25/98

Fingerprint

Binary mixtures
Phase transitions
Crystalline materials
Liquids
Benzoates
Temperature
Superconducting transition temperature
Phase diagrams
Optical microscopy
X ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Obadović, D. Ž., Vajda, A., Stančić, M., Lazar, D., Fodor-Csorba, K., & Bata, L. (2000). Study of phase transitions of binary liquid crystalline mixtures. In Materials Science Forum (Vol. 321). Trans Tech Publ.

Study of phase transitions of binary liquid crystalline mixtures. / Obadović, D. Ž; Vajda, A.; Stančić, M.; Lazar, D.; Fodor-Csorba, K.; Bata, L.

Materials Science Forum. Vol. 321 Trans Tech Publ, 2000.

Research output: Chapter in Book/Report/Conference proceedingChapter

Obadović, DŽ, Vajda, A, Stančić, M, Lazar, D, Fodor-Csorba, K & Bata, L 2000, Study of phase transitions of binary liquid crystalline mixtures. in Materials Science Forum. vol. 321, Trans Tech Publ, Proceedings of the 1998 6th European Powder Diffraction Conference (EPDIC 6), Budapest, Hung, 8/22/98.
Obadović DŽ, Vajda A, Stančić M, Lazar D, Fodor-Csorba K, Bata L. Study of phase transitions of binary liquid crystalline mixtures. In Materials Science Forum. Vol. 321. Trans Tech Publ. 2000
Obadović, D. Ž ; Vajda, A. ; Stančić, M. ; Lazar, D. ; Fodor-Csorba, K. ; Bata, L. / Study of phase transitions of binary liquid crystalline mixtures. Materials Science Forum. Vol. 321 Trans Tech Publ, 2000.
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