کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9693914 | 1459633 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase behaviour of binary mixtures of LC compounds of different molecular structure and comparable molecular length
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
Phase diagrams were constructed for the various binary systems made from compounds of structurally different mesogens; one component is from the five homologous series 4-(4â²-substituted phenylazo)phenyl-4â³-alkoxybenzoates (Ia-e) and the other from the similarly substituted homologous series 4-(4â²-substituted phenyl carbonyloxy)phenyl-4â³-alkoxy benzoates (IIa-e). Transition temperatures of all mixtures prepared were measured by differential scanning calorimetry and identified by polarized light microscopy. Polarity and polarizability of the investigated compounds could be varied by changing the substituent X (CH3O, CH3, Cl, CN and NO2), which covers a wide range of polarity, and the alkoxy-chain length, which varied between 6, 8, 14, or 16 carbons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 439, Issues 1â2, 1 December 2005, Pages 142-150
Journal: Thermochimica Acta - Volume 439, Issues 1â2, 1 December 2005, Pages 142-150
نویسندگان
Refaat I. Nessim,