Alkyd resin synthesis by enzymatic alcoholysis

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dc.contributor.authorde Carvalho R.K.C.
dc.contributor.authorOrtega F.S.
dc.contributor.authorMorandim-Giannetti A.A.
dc.date.accessioned2019-08-20T00:12:03Z
dc.date.available2019-08-20T00:12:03Z
dc.date.issued2019
dc.description.abstract© 2019, Iran Polymer and Petrochemical Institute.The synthesis of an alkyd resin through an enzymatic alcoholysis provided by Novozym 435 was analyzed in this study. The alcoholyses were performed in different enzyme concentrations (2.63, 4.00, 6.00, 8.00, and 9.36%, based on oil’s mass), oil/glycerin ratios (1.68, 2.50, 3.50, 4.50, and 5.18 oil mol/glycerin mol), at temperatures (33.18, 40.00, 50.00, 60.00, and 66.82 °C) to determine the best reaction conditions for obtaining the highest percentage of monoacylglycerides and diacylglycerides [glycerin/vegetal oil ratio of 1:3.5 (mol/mol), at temperature of 56.73 °C, and 9.36% enzyme concentration based on oil’s mass (w/w)]. It was verified that 2 h was the ideal reaction time. Under the best alcoholysis condition, the alkyd resin was produced using phthalic anhydride and the product presented similar characteristics as the current resin produced by a chemical catalyst in the industrial process (final viscosity = Y2, solid content = 44.00%, and IA ≤ 12). 1H NMR and FTIR analyses confirmed the formation of an alkyd resin as they showed the presence of characteristic signals of the final product. The re-usability of the enzyme was investigated, and significant results were observed in the reaction after five cycles (by activity reduction of 6%) showing the viability of applying enzymatic steps in industrial procedures to produce resins in the future, once the application of enzymes also reduced the level of toxicity in the processes.
dc.description.firstpage747
dc.description.issuenumber9
dc.description.lastpage757
dc.description.volume28
dc.identifier.citationDE CARVALHO, RENATA KOBAL CAMPOS; ORTEGA, FERNANDO DOS SANTOS; GIANNETTI, Andreia de Araujo Morandim. Alkyd resin synthesis by enzymatic alcoholysis. IRANIAN POLYMER JOURNAL, v. x, n. x, p. x-x, 2019.
dc.identifier.doi10.1007/s13726-019-00738-y
dc.identifier.issn1735-5265
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/1717
dc.relation.ispartofIranian Polymer Journal (English Edition)
dc.rightsAcesso Restrito
dc.subject.otherlanguageAlkyd resin
dc.subject.otherlanguageDesign of experiments
dc.subject.otherlanguageEnzymatic alcoholysis
dc.subject.otherlanguageEnzymatic catalysis
dc.subject.otherlanguageNovozym 435
dc.titleAlkyd resin synthesis by enzymatic alcoholysis
dc.typeArtigo
fei.scopus.citations10
fei.scopus.eid2-s2.0-85071899114
fei.scopus.subjectCharacteristic signal
fei.scopus.subjectEnzymatic alcoholysis
fei.scopus.subjectEnzymatic catalysis
fei.scopus.subjectEnzyme concentrations
fei.scopus.subjectIndustrial processs
fei.scopus.subjectNovozym435
fei.scopus.subjectPhthalic anhydrides
fei.scopus.subjectReaction conditions
fei.scopus.updated2025-02-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85071899114&origin=inward
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