Synthesis and characterization of heterocyclic functionalized polymers by click reaction: Preparation of magnetic nanocomposites and studies on their thermal, mechanical, photophysical and metal ions removal properties
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Abstract
This work reports synthesis and characterization of heterocyclic functionalized polymers, poly(triazole-etherimidazole) s (PTAEI), from a dialkyne-terminated compound, 3-(4,5-bis(4-(propargyloxy)phenyl)-1H-imidazol-2-yl)-9-ethyl-9H-carbazole, by using click reaction. PTAEIs were characterized and their properties such as solubility, thermal, mechanical, photophysical and metal ions adsorption were investigated. These polymers had weight average molar masses (M w) in the range of 19100–26700 g/mol, exhibited excellent solubility in polar aprotic solvents and formed low-colored flexible thin films by solution casting method. They exhibited good thermal stability with glass transition temperatures (T g) between 160 °C and 211 °C and 10% weight loss temperatures (T 10%) in the range of 308–426 °C. Nanocomposites of PTAEIs with epoxide-terminated Fe3O4 showed that strong interfacial interaction between inorganic particles and the polymer matrix contributed to the enhanced thermal and mechanical properties. The photoluminescence intensity of the PTAEIs increased and the spectra red shifted with increasing Fe3O4 content. The PTAEIs and nanocomposites were tested for their extraction capability of metal ions from aqueous solutions either individually or in the mixture.
Keywords
Click chemistry Heterocylic polymer Poly(triazole-ether-imidazole) Magnetic nanocomposite Metal ion removalPreview
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