Annealing and crystallization kinetics of poly(lactic acid) pieces obtained by additive manufacturing

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorReis, Iago Augusto-
Autor(es): dc.creatorClaro, Pedro Ivo Cunha-
Autor(es): dc.creatorMarcomini, Andre Luis-
Autor(es): dc.creatorMattoso, Luiz Henrique Capparelli-
Autor(es): dc.creatorSilva, Sandro Pereira da-
Autor(es): dc.creatorSena Neto, Alfredo Rodrigues de-
Data de aceite: dc.date.accessioned2026-02-09T12:15:31Z-
Data de disponibilização: dc.date.available2026-02-09T12:15:31Z-
Data de envio: dc.date.issued2022-01-13-
Data de envio: dc.date.issued2022-01-13-
Data de envio: dc.date.issued2021-06-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/48857-
Fonte completa do material: dc.identifierhttps://doi.org/10.1002/pen.25737-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1157688-
Descrição: dc.descriptionIn this study, we investigated the influence of isothermal treatment of poly(lactic acid) (PLA) 3D printed samples at different crystallization temperatures. In this case, we analyzed the effect of each crystallization temperature on spherulites formation in printed PLA, affecting the final mechanical properties of pieces. For such, the thermomechanical properties, morphological structure, and crystallization kinetics were analyzed before and after thermal treatment. The 3D printed samples were heat treated at 80°C, 90°C, 100°C, 110°C, and 119°C. With annealing, we observed an improvement in the mechanical PLA properties; however, the exothermic crystallization peak was different for the samples. Pieces before annealing were found to have a low crystallinity index (Ic) of 2%–7%, and the pieces after annealing presented a considerable Ic (27%–34%). Annealing temperatures of 100°C, 110°C, and 119°C produced the fastest crystallization kinetics, while annealing temperatures of 80°C and 90°C resulted in the lowest crystallization kinetics for complete crystallization. After annealing, improvement in the flexural strength (34%–47%) and Young's modulus (26%–51%) for all annealed pieces occurred. The appropriate condition was observed at 100°C, which was the onset temperature of crystallization, owing to the combination of the shorter time of crystallization with the increased mechanical properties.-
Idioma: dc.languageen-
Publicador: dc.publisherSociety of Plastics Engineers-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourcePolymer Engineering & Science-
Palavras-chave: dc.subjectCrystallization kinetics-
Palavras-chave: dc.subjectFilament structure–property relations-
Palavras-chave: dc.subjectMechanical properties-
Palavras-chave: dc.subjectThermal annealing-
Palavras-chave: dc.subjectCinética de cristalização-
Palavras-chave: dc.subjectPropriedades mecânicas-
Palavras-chave: dc.subjectRecozimento-
Palavras-chave: dc.subjectTratamento térmico-
Título: dc.titleAnnealing and crystallization kinetics of poly(lactic acid) pieces obtained by additive manufacturing-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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