Synthesis and characterization of a new hydrogen bonded side chain liquid crystal block copolymer and investigation of electrical properties
| Autor: | Mustafa Okutan, Esma Ahlatcıoğlu Özerol, Yesim Hepuzer Gursel, Ayşegül Çelik Bozdoğan, Burak Korkmaz, Bahire Filiz Senkal |
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| Rok vydání: | 2017 |
| Předmět: |
Hydrogen
General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Characterization (materials science) chemistry Liquid crystal Polymer chemistry Copolymer Side chain 0210 nano-technology |
| Zdroj: | Pure and Applied Chemistry. 89:19-28 |
| ISSN: | 1365-3075 0033-4545 |
| DOI: | 10.1515/pac-2016-0816 |
| Popis: | A new PEG-containing liquid crystalline side chain block copolymer HBC-PEG550 was prepared from poly(ethylene glycol)-b-poly(2-(diethylamino) ethyl methacrylate copolymer (BC-PEG550) and 8-(4-cyanobiphenyl-4′-oxy) octan-1-ol (LC8) by molecular self-assembly processes via hydrogen bond formation between amine group of HBC-PEG550 and hydroxyl group of the LC8. The formation of H bond was confirmed by using FTIR spectroscopy. The liquid crystalline behavior of the HBC-PEG550 was investigated by differential scanning calorimeter (DSC) and polarized optical microscopy. Dielectric properties of HBC-PEG550 and HBC-PEG550 has been studied by impedance spectroscopy. Real and imaginary parts of complex dielectric constant, impedance, and energy loss tangent factor for HBC-PEG550 and HBC-PEG550 have been characterized in the frequency range of 100 Hz–15 MHz. |
| Databáze: | OpenAIRE |
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