Show simple item record

dc.contributor.authorGönen, Mehmet
dc.contributor.authorEgbuchunam, Theresa Obuajulu
dc.contributor.authorBalköse, Devrim
dc.contributor.authorİnal, Fikret
dc.contributor.authorÜlkü, Semra
dc.date.accessioned2017-06-30T08:52:19Z
dc.date.available2017-06-30T08:52:19Z
dc.date.issued2015-12
dc.identifier.citationGönen, M., Egbuchunam, T.O., Balköse, D., İnal, F., and Ülkü, S. (2015). Preparation and characterization of magnesium stearate, cobalt stearate, and copper stearate and their effects on poly(vinyl chloride) dehydrochlorination. Journal of Vinyl and Additive Technology, 21(4), 235-244. doi:10.1002/vnl.21384en_US
dc.identifier.issn1083-5601
dc.identifier.urihttps://doi.org/10.1002/vnl.21384
dc.identifier.urihttp://hdl.handle.net/11147/5820
dc.description.abstractPreparation and characterization of pure metal soaps and investigation of their effects on poly(vinyl chloride) (PVC) dehydrochlorination were the objectives of the present study. Magnesium stearate (MgSt2), cobalt stearate (CoSt2), and copper stearate (CuSt2) were prepared by a precipitation method. An aqueous sodium stearate (NaSt) solution was mixed at 500 rpm with respective metal salt solutions at 75oC. The precipitates that formed were collected by filtration, washed with water, and ultimately dried at 105oC under reduced pressure. Lamellar crystals that melted on heating were obtained. Solid-liquid phase transitions were observed by optical microscopy at 160oC, 159oC, and 117oC for MgSt2, CoSt2, and CuSt2, respectively. However, the melting points of MgSt2, CoSt2, and CuSt2 were determined as 115oC, 159oC, and 111oC, respectively, by analysis by differential scanning calorimetry. The onset temperature of the mass loss was the lowest at 255oC for CuSt2 and the lowest activation energy for thermal decomposition was 18 kJ/mol for CuSt2. CoSt2 was effective in extending the induction time of PVC dehydrochlorination at both 140oC and 160oC. The activation energy calculated from stability time decreased from 175 kJ/mol for a blank PVC sample to 114, 105, and 107 kJ/mol for MgSt2, CoSt2, and CuSt2-containing PVC samples, respectively. All three metal soaps accelerated the dehydrochlorination of PVC. J. VINYL ADDIT. TECHNOL., 21:235-244, 2015.en_US
dc.description.sponsorshipTUBITAK (MISAG 185)en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relationinfo:eu-repo/grantAgreement/TUBITAK/MİSAG/185en_US
dc.relation.isversionof10.1002/vnl.21384en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectChemical activationen_US
dc.subjectChlorine compoundsen_US
dc.subjectCobalten_US
dc.subjectActivation energyen_US
dc.subjectWater filtrationen_US
dc.subjectPolyvinyl chloridesen_US
dc.subjectMetal salt solutionen_US
dc.titlePreparation and characterization of magnesium stearate, cobalt stearate, and copper stearate and their effects on poly(vinyl chloride) dehydrochlorinationen_US
dc.typearticleen_US
dc.contributor.authorIDTR30587en_US
dc.contributor.institutionauthorBalköse, Devrim
dc.contributor.institutionauthorİnal, Fikret
dc.contributor.institutionauthorÜlkü, Semra
dc.relation.journalJournal of Vinyl and Additive Technologyen_US
dc.contributor.departmentİYTE, Mühendislik Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.identifier.volume21en_US
dc.identifier.issue4en_US
dc.identifier.startpage235en_US
dc.identifier.endpage244en_US
dc.identifier.wosWOS:000368370700001
dc.identifier.scopusSCOPUS:2-s2.0-84956691365
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record