Synthesis, characterization, and thermal properties of oligo-2-hydroxyphenylbenzaldimine

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dc.authoridKoyuncu, Sermet / 0000-0001-8352-8326
dc.authoridKaya, İsmet / 0000-0002-9813-2962
dc.authoridŞenol, Dilek / 0000-0001-7854-0419
dc.contributor.authorKaya, İsmet
dc.contributor.authorŞenol, Dilek
dc.contributor.authorKoyuncu, Sermet
dc.date.accessioned2025-01-27T21:13:29Z
dc.date.available2025-01-27T21:13:29Z
dc.date.issued2004
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, the oxidative polycondensation reaction conditions of 2-hydroxyphenylbenzaldimine (HPBA) with air oxygen and NaOCl were studied in an aqeous alkaline medium between 50 and 90degreesC. The product was characterized by H-1-NMR, FT-IR, UV-Vis, size exclusion chromatography (SEC), and element analysis techniques. Solubility testing of oligo-2-hyroxyphenylbenzaldimine was investigated by organic solvents such as DMF, THF, DMSO, methanol, ethanol, CHCl3, CCl4, toluene acetonitrile, ethyl acetate, conc. H2SO4, and aqueous alkaline solution. 2-Hydroxyphenylbenzaldimine (96%) was converted to oligomer by oxidation in an aqueous alkaline medium. According to solubility in water, oligo-2-hydroxyphenylben-zaldimine separated into two fractions: oligo-2-hydroxyphenylbenzaldimine (OHPBA-1, undissolved in water) and oligo-2-hydroxyphenylbenzaldimine (OHPBA-II, dissolved in water). According to the SEC technique, the number average molecular weight (M.), mass average molecular weight (M,), and polydispersity index (PDI) values of OHPBA-1 and OHPBA-II were found to be 2166 g mol(-1), 2591 g mol(-1), and 1.196; 1736 g mol(-1), 2509 g mol(-1), and 1.445, respectively. Also, differential thermal analysis (DTA) and thermo gravemetric analyses (TGA) were shown to be stable of oligo-2-hydroxyphenylbenzaldimine against thermo-oxidative decomposition. The weight loss of OHPBA was found to be 93.63% at 1000degreesC.
dc.identifier.doi10.1081/PPT-120038603
dc.identifier.endpage1039
dc.identifier.issn0360-2559
dc.identifier.issue4
dc.identifier.scopus2-s2.0-7744234673
dc.identifier.scopusqualityN/A
dc.identifier.startpage1029
dc.identifier.urihttps://doi.org/10.1081/PPT-200030014
dc.identifier.urihttps://hdl.handle.net/20.500.12428/28435
dc.identifier.volume43
dc.identifier.wosWOS:000224485200004
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMarcel Dekker Inc
dc.relation.ispartofPolymer-Plastics Technology and Engineering
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectoxidative polycondensation
dc.subjectoligo-2-hydroxyphenylbenzaldimine
dc.subjectair oxygen
dc.subjectNaOCl
dc.subjectthermal analysis
dc.titleSynthesis, characterization, and thermal properties of oligo-2-hydroxyphenylbenzaldimine
dc.typeArticle

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