New soluble azophenol polymers prepared by oxidative polycondensation

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dc.authorid0000-0002-7697-3613
dc.contributor.authorCanakci, Dilek
dc.contributor.authorTuncel, Mehmet
dc.contributor.authorMart, Hasan
dc.contributor.authorSerin, Selahattin
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2007
dc.departmentNiğde ÖHÜ
dc.description.abstractNew azophenol polymers (P-1, P-2 and P-3) were synthesised by the oxidative polycondensation (OP) reaction of three different azophenol monomers in aqueous alkaline medium with NaOCl as the oxidant. The monomers and the polymers were characterised by elemental analyses, and UV-visible, Fourier transform infrared, H-1 NMR and C-13 NMR spectroscopic studies, which revealed that the polymers synthesised by OP are composed of oxyphenylene (C-O-C) and phenylene (C-C) units. The polymers obtained are soluble in dimethylformamide and dimethylsulfoxide. Average molecular weights of the polymers were determined by gel permeation chromatography. Additionally, P-2 and P-3 are soluble in water and methanol. On the basis of thermogravimetric analyses, 5 and 50% weight-loss temperatures of the polymers were found to be 218, 700 (P-1), 263, 609 (P-2) and 100, 809 degrees C (P-3), respectively, suggesting a high thermal stability. Thermal analyses using differential scanning calorimetry revealed that the azophenol polymers are highly amorphous, and melting peaks were not observed in the heating cycles. This suggests that all the polymers are highly amorphous. The azophenol polymers show a reversible trans-cis-trans isomerisation process. These properties of the polymer could be promising for their technological usage. (C) 2007 Society of Chemical Industry.
dc.identifier.doi10.1002/pi.2298
dc.identifier.endpage1543
dc.identifier.issn0959-8103
dc.identifier.issn1097-0126
dc.identifier.issue12
dc.identifier.scopus2-s2.0-36348956705
dc.identifier.scopusqualityQ2
dc.identifier.startpage1537
dc.identifier.urihttps://dx.doi.org/10.1002/pi.2298
dc.identifier.urihttps://hdl.handle.net/11480/5334
dc.identifier.volume56
dc.identifier.wosWOS:000251014600009
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherWILEY
dc.relation.ispartofPOLYMER INTERNATIONAL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectpolymer synthesis
dc.subjectazophenol polymers
dc.subjectphotoisomerisation
dc.subjectpolycondensation
dc.titleNew soluble azophenol polymers prepared by oxidative polycondensation
dc.typeArticle

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