H. Mart, T. Sökmen, H. Yuruk
Jul 15, 2006
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Influential Citations
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Journal
Journal of Applied Polymer Science
Abstract
Polymerization of 3-hydroxybenzaldehyde was investigated by oxidative polycondensation (OP) method. No polycondensation reaction was observed both in acidic (in CH3COOH) and organic (in THF) media. Polycondensation was carried out with hydrogenperoxide (H2O2) in an aqueous alkaline medium at 90°C. The product was characterized by 1H NMR, 13C NMR, FTIR, UV–vis, and elemental analysis. The number average molecular weight, mass average molecular weight, and polydispersity index values of O-3HBA were found to be 3600, 8000 g mol−1, and 2.22, respectively. The product (O-3HBA) with reactive aldehyde and hydroxyl group was soluble in most polar organic solvents and was composed of phenylene units. Thermal properties of the oligomer were investigated by thermogravimetric analyses under an air atmosphere. The weight loss of O-3HBA was found to be 5 and 50% at 231 and >1000°C, respectively. The carboneous residue of the O-3HBA was 54% at 1000°C. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 892–897, 2006