Solid-state characterization of poly(ethylene glycol) samples prepared by solvent cast technique

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dc.contributor.authorDinc, C. Ozdemir
dc.contributor.authorGuner, A.
dc.date.accessioned2024-09-18T20:54:20Z
dc.date.available2024-09-18T20:54:20Z
dc.date.issued2017
dc.departmentHatay Mustafa Kemal Ãœniversitesien_US
dc.description3rd International Conference on New Trends in Chemistry -- APR 28-30, 2017 -- Helsinki, FINLANDen_US
dc.description.abstractThe effect of solvents (H-donor; H-acceptor and both H-acceptor and H-donor solvents) casted on the poly(ethylene glycol) (PEG) samples with varying molecular weights (2000, 4600, 8000 and 10000) was performed solid-state characterization by Fourier Transform Infrared Spectroscopy (FTIR), Raman and X-ray Diffraction (XRD) in submitted study. In this study, spectral differences were classified with respect to stretching, bending, rocking, angle bending, internal rotation frequencies and low-frequency Raman region according to functional groups and thus crystallinity were evaluated as related with solvent character and polymer molecular weight. Crystalline and amorphous regions in the XRD diffractograms have been found by Polynomial Regression method through Microsoft Office Excel program and subsequently, crystallinity percentages were evaluated. From XRD spectra of PEG/solvent systems, the highest decrease in crystallinity percent has been detected in the sample cast from tetrahydrofuran. On the other hand, the largest frequency shifts of various stretching and bending vibrations of PEG have been observed for the samples cast from chloroform and especially tetrahydrofuran in FTIR and Raman spectra. In the end of trio study, the parallelism of both computation and thermodynamic and spectroscopic data about solubility profiles of PEG/solvent systems has been determined. The results indicated that association power of solvents in PEG samples prepared by solvent cast technique was decreased below order: tetrahydrofuran > chloroform > dimethyl sulfoxide > methanol > water.en_US
dc.identifier.endpage20en_US
dc.identifier.issn0324-1130
dc.identifier.startpage15en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12483/11756
dc.identifier.volume49en_US
dc.identifier.wosWOS:000413538600003en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherBulgarian Acad Scienceen_US
dc.relation.ispartofBulgarian Chemical Communicationsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPoly(ethylene glycol)en_US
dc.subjectsolvent cast techniqueen_US
dc.subjectfourier transform infrared spectroscopyen_US
dc.subjectramanen_US
dc.subjectx-ray diffractionen_US
dc.titleSolid-state characterization of poly(ethylene glycol) samples prepared by solvent cast techniqueen_US
dc.typeConference Objecten_US

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