Synthesis and Characterization of Oligo-2-[(2-hydroxymethylphenylimino) methyl] phenol and Oligo-2-[(2-hydroxymethylphenylimino) methyl]-5-bromo-phenol

Authors : İsmet KAYA, Ayşe Erçağ And Süleyman ÇULHAOĞLU

Pages : 55-63

View : 19 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Oligo-2-[insert ignore into journalissuearticles values(2-hydroxymethylphenylimino); methyl] phenol O-insert ignore into journalissuearticles values(2-HMPIMP); and oligo-2-[insert ignore into journalissuearticles values(2-hydroxymet\-hylphenyl imino); methyl]-5-bromo-phenol O-insert ignore into journalissuearticles values(2-HMPIMBP); were synthesized by the oxidative polycondensation reaction using air as an oxidant in an aqueous alkaline medium at 70 °C. They were characterized by 1H-NMR, FT-IR, UV-vis, TG, size exclusion chromatography insert ignore into journalissuearticles values(SEC); and elemental analysis. According to the SEC analyses, the number-average molecular weight insert ignore into journalissuearticles values(Mn);, weight-average molecular weight insert ignore into journalissuearticles values(Mw); and polydispersity index insert ignore into journalissuearticles values(PDI); values of O-2-HMPIMBP and O-2-HMPIMP are 1100, 1600 g mol-1 and 1.45; and 6000, 6250 g mol-1 and 1.04, respectively. According to TG analyses, the weight losses of O-2-HMPIMP and O-2-HMPIMBP are 98.31% and 96.91%, respectively, at 900 °C.
Keywords : Oxidative polycondensation, oligo 2 2 hydroxymethylphenylimino, methyl phenol, oligo 2 2 hydroxymethylphenylimino, methyl 5 bromo phenol, thermal analyses,