Macromolecular Research, Vol.23, No.11, 1018-1025, November, 2015
Synthesis and characterization of novel poly(arylene ether)s containing 1,3,4-oxadiazole and triazole units through click chemistry
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A novel bisethynyl monomer containing 1,3,4-oxadiazole unit, 2,5 bis(4-propargloxy phenyl)-1,3,4-oxadiazole, was synthesized and polymerized with diazido monomers (2,2 bis[4-(4-azidobuthyl)phenyl]propan and 1,4- diazidobutane) using “Click” chemistry to form novel polyaromatic ethers contining 1,3,4-oxadiazole and triazole units. The resulting polymers were characterized by using IR(infrared) and 1H NMR (nuclear magnetic resonance) techniques. The molecular weight of the resulting polymers, however, seemed relatively low according to their solution viscosity values [η inh (inherent viscosity)=0.18 and 0.22 dL/g (deciliter/gram)]. The solubility experiments show that the obtained polymers have lower solubility in organic solvents due to their crystallinity which was confirm by X-ray diffraction but have good solubility in NMP solvent. In addition, the polymers exhibit good thermal stability and relatively high T g (glass transition temperature) under N2 (Nitrogen) atmosphere.
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