A screening process for carbonation of vegetable oils using an aluminum(salen) complex with a further application as weldable polymers

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Sheffield-
Autor(es): dc.contributorGreen Chemistry Centre of Excellence-
Autor(es): dc.creatorAlarcon, Rafael T.-
Autor(es): dc.creatorLamb, Katie J.-
Autor(es): dc.creatorCavalheiro, Éder T. G.-
Autor(es): dc.creatorNorth, Michael-
Autor(es): dc.creatorBannach, Gilbert-
Data de aceite: dc.date.accessioned2025-08-21T17:39:25Z-
Data de disponibilização: dc.date.available2025-08-21T17:39:25Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-20-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/app.53962-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249875-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249875-
Descrição: dc.descriptionCarbon dioxide (CO2) occurs naturally, though its emissions have been increasing due to anthropogenic activities, and its increasing atmospheric concentration levels are causing a greenhouse effect. In efforts to develop new carbon dioxide utilization (CDU) methodologies, the catalyzed reaction of CO2 with epoxidized vegetable oil, obtained from Brazilian macaw oil and Baru oil, to form carbonated oils for novel and sustainable monomers was explored. A screening process is carried out to develop the best reaction conditions, by varying catalyst/cocatalyst loading, reaction time, CO2 pressure, and the reaction temperature, resulting in conversions of 100%. The aluminum(salen) complex shows a selective and efficient catalyst activity. Both carbonated oils are reacted with amines (1,6-diaminohexane, lysine, and 4,4′-methylenebis [cyclohexylamine]) to provide weldable polyhydroxyurethanes. Polymers synthesized from lysine provide a more selective reaction and higher cross-linked structures, with fewer side reactions involving the glyceride groups. All the synthesized polymers are thermally stable above 200°C and differential scanning calorimetry (DSC) analysis shows two main thermal events, related to the glass transition (Tg) and the topology-freezing transition temperature (Tv). The Tv result indicates that the polymer has weldable properties due to chemical bond exchange. Thus, these polymers can be healed into different shapes upon exposure to red light (660 nm).-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Carlos Institute of Chemistry University of São Paulo-
Descrição: dc.descriptionDepartment of Chemistry School of Science UNESP—São Paulo State University-
Descrição: dc.descriptionDepartment of Chemical and Biological Engineering University of Sheffield-
Descrição: dc.descriptionDepartment of Chemistry The University of York Green Chemistry Centre of Excellence-
Descrição: dc.descriptionDepartment of Chemistry School of Science UNESP—São Paulo State University-
Descrição: dc.descriptionFAPESP: 2019/11493-4-
Descrição: dc.descriptionFAPESP: 2021/02152-9-
Descrição: dc.descriptionFAPESP: 2021/14879-0-
Idioma: dc.languageen-
Relação: dc.relationJournal of Applied Polymer Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectaluminum catalyst-
Palavras-chave: dc.subjectBrazilian biomass-
Palavras-chave: dc.subjectcyclic carbonate-
Palavras-chave: dc.subjectgreenhouse utilization-
Palavras-chave: dc.subjectrenewable material-
Palavras-chave: dc.subjectweldable material-
Título: dc.titleA screening process for carbonation of vegetable oils using an aluminum(salen) complex with a further application as weldable polymers-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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