Abstract
A new dialkyne-terminated monomer, 2,3-bis(4-(prop-2-yn-1-yloxy)phenyl)quinoxaline, was synthesized and used in the click reaction with various alkyl dibromides by a convenient one-pot procedure to yield poly(triazole-ether-quinoxaline)s (PTAEQ). The weight average molecular weights (Mw) of PTAEQs were measured by GPC and were in the range of 1.87×104–2.41×104 g/mol. These polymers exhibited Tg and 10 % weight loss temperatures (T10%) in the range of 177–262 °C and 350–420 °C, respectively. PTAEQs showed excellent solubility in various polar organic solvents and formed low-colored and tough thin films via solution casting. A series of nanocomposites was prepared from solution blending of PTAEQs with epoxide-end capped Fe3O4 nanoparticles. Structure and morphology of the prepared magnetic nanocomposites (MNCPTAEQ)s were investigated, and the effect of interfacial adhesion between organic and inorganic phases on thermal, solubility, mechanical and optical properties of composites was investigated. The functional sites in the polymer chains were also tested for the removal of toxic metal ions such as Cr3+, Pb2+, Cd2+, Sn2+, Cu2+ and Hg2+ from aqueous solutions either individually or in the mixture.
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