Open AccessMolecular weight monitoring of poly(2‐[[4‐(dimethylamino)benzylidene]amino]phenol) depending on polymerization conditions: investigation of thermal stability, antimicrobial properties, and conductivity enhancement
Author(s) -
Yılmaz Baran Nuray,
Saçak Mehmet
Publication year - 2018
Publication title -
advances in polymer technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 44
eISSN - 1098-2329
pISSN - 0730-6679
DOI - 10.1002/adv.21971
Subject(s) - phenol , nuclear chemistry , polymerization , materials science , thermal stability , enterococcus faecalis , fourier transform infrared spectroscopy , polymer chemistry , polymer , chemistry , organic chemistry , escherichia coli , biochemistry , physics , quantum mechanics , gene
A novel polyphenol with azomethine group, Poly(2‐[[4‐(dimethylamino)benzylidene]amino]phenol) P(2‐ DBAP ), was synthesized by oxidative polycondensation of 2‐[[4‐(dimethylamino)benzylidene]amino]phenol) (2‐ DBAP ) using Na OC l, H 2 O 2 , and O 2 oxidants in aqueous alkaline medium. The effects of oxidant type and concentration, monomer concentration and polymerization temperature and time on yield and molecular weight distribution of P(2‐ DBAP ) were investigated. The structures of 2‐ DBAP and P(2‐ DBAP ) were confirmed by UV ‐Vis, FTIR , and 1 HNMR techniques. Thermal behavior of the polymer was also analyzed by TG ‐ DTG techniques. Electrical conductivity value of P(2‐ DBAP ) which was doped with iodine for 24 hr at 60°C was measured as 7 × 10 −2 S/cm by increasing 10 10 fold compared with its undoped form. This conductivity level is the highest value reported in the literature for polyphenols containing azomethine group. Additionally, antimicrobial activities of 2‐ DBAP and P(2‐ DBAP ) were tested against Sarcina lutea, Enterobacter aerogenes, Escherichia coli, Enterococcus Feacalis, Klebsiella pneumoniae, and Bacillus subtilis bacteria and Candida albicans and Saccharomyces cerevisiae fungi.