3,4-dichlorobenzyl methacrylate and ethyl methacrylate system: monomer reactivity ratios and determination of thermodynamic properties at infinite dilution by using inverse gas chromatography

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dc.authoridKaya, İsmet / 0000-0002-9813-2962
dc.contributor.authorDemirelli, K.
dc.contributor.authorKaya, İsmet
dc.contributor.authorCoşkun, M.
dc.date.accessioned2025-01-27T20:59:43Z
dc.date.available2025-01-27T20:59:43Z
dc.date.issued2001
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractCopolymers with various contents of 3,4-dichlorobenzyl methacrylate (BzMA) and ethyl methacrylate (EMA) were prepared in 1,4-dioxane solution using 2,2 ' -azobisisobutyronitrile (AIBN) as initiator at 60 degreesC. The copolymer compositions were determined by H-1 NMR analysis. The monomer reactivity ratios were calculated by both Fineman-Ross, and Kelen-Tudos methods. The monomer reactivity ratios were found to be r(BMA) = 0.521 +/- 0.019, r(EMA) = 0.847 +/- 0.221 (Kelen-Tudos) and r(BMA) = 0.677 +/- 0.008 r(EMA) = 1.117 +/- 0.209 (Fineman-Ross). The FT-IR, C-13 NMR spectra of the copolymers have been discussed. In all other samples thermal degradation proceeded in a single step. A slight increase in thermal stability of the copolymers was observed with increase in BzMA content. Some thermodynamic quantities such as the specific retention volumes, V-g(0), weight fraction activity coefficients of solute probes at infinite dilution, Ohm (infinity)(1), Flory-Huggins intereaction parameters, chi (infinity)(12), between polymers and solvents, the partial molar free energy, DeltaG(1)(infinity) the partial molar heat of mixing, DeltaH(1)(infinity), at infinite dilution were determined from the interactions of poly(BzMA-co-EMA) with alcohols, ketones, acetates, aromatics and n-alkanes by inverse gas chromatography method at 130-150 degreesC. All probes are non-solvent for poly(BzMA-co-EMA) (7:93%) and poly(BzMA-co-EMA) (87:13%) at 130-150 degreesC. (C) 2001 Elsevier Science Ltd. All rights reserved.
dc.identifier.doi10.1016/S0032-3861(01)00019-2
dc.identifier.endpage5188
dc.identifier.issn0032-3861
dc.identifier.issue12
dc.identifier.scopus2-s2.0-0035078234
dc.identifier.scopusqualityQ1
dc.identifier.startpage5181
dc.identifier.urihttps://doi.org/10.1016/S0032-3861(01)00019-2
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26797
dc.identifier.volume42
dc.identifier.wosWOS:000167609400013
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofPolymer
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectmonomer reactivity ratios
dc.subjectNMR
dc.subjectinverse gas chromatography
dc.title3,4-dichlorobenzyl methacrylate and ethyl methacrylate system: monomer reactivity ratios and determination of thermodynamic properties at infinite dilution by using inverse gas chromatography
dc.typeArticle

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