Investigation of physico-mechanical, thermal, morphological, and antibacterial effects of bio-based epoxidized soybean oil plasticizer on PLA-ZnO nanocomposites as flexible food packaging: Effect of bio-based epoxidized soybean oil plasticizer on PLA-ZnO nanocomposites

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorIslamic Azad University-
Autor(es): dc.contributorIran Polymer and Petrochemical Institute-
Autor(es): dc.contributorUniversity of Tehran-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorThe contribution of the first and second authors is equal.-
Autor(es): dc.creatorGhoroghi, Mina-
Autor(es): dc.creatorEstaji, Sara-
Autor(es): dc.creatorTayouri, Mohammad Iman-
Autor(es): dc.creatorJahanmardi, Reza-
Autor(es): dc.creatorNobre, Marcos A.L.-
Autor(es): dc.creatorKhonakdar, Hossein Ali-
Data de aceite: dc.date.accessioned2025-08-21T16:29:07Z-
Data de disponibilização: dc.date.available2025-08-21T16:29:07Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.arabjc.2024.105928-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299545-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299545-
Descrição: dc.descriptionPolylactic acid (PLA) has attracted considerable attention because of its excellent properties compared to petroleum-based materials. However, improving its toughness, crystallization, and functionalities is challenging. Using a laboratory internal batch mixer, we produced unique blended nanocomposites comprising polylactic acid (PLA) as the host matrix, epoxidized soybean oil (ESO) as the plasticizer, and zinc oxide nanoparticles (ZnO NPs) as the reinforcements. The SEM-EDS test showed that neat PLA had a smooth surface, but the PLA-ZnO nanocomposite had rough micrographs and a uniform dispersion state of the nanoparticles. It was also found that adding ESO to the blend nanocomposites created a matrix droplet structure, and the size of the oil domains decreased as the ZnO content increased. All results derived from FTIR, XRD, and DSC tests were consistent with the morphological features in which ZnO NPs acted as the blend's compatibilizer and heterogeneous nucleating agent. Our team observed that adding ESO decreased the PLA-ZnO nanocomposites’ glass transition temperature (Tg) by an average of 2 °C and increased the crystallization rate. It was also confirmed that the presence of ESO improved the flexibility and reduced the strength of the PLA. The tensile strength was further enhanced by incorporating ZnO into the blend. Adding 5 wt% of ZnO NPs increased the tensile strength of the PLA containing 10 wt% ESO by approximately 3.5 MPa. Furthermore, the tensile modulus was predicted using theoretical models; for example, the Paul model fitted with experimental findings. The addition of ESO increased the overall surface free energy of the nanocomposites. On the other hand, increasing ZnO content resulted in high contact angles and antibacterial properties of the blended nanocomposites. The favorable characteristics of the resulting films emphasized the potential use of these nanocomposite films as a promising choice for food packaging materials.-
Descrição: dc.descriptionDepartment of Polymer Engineering Science and Research Branch Islamic Azad University-
Descrição: dc.descriptionDepartment of Polymer Processing Iran Polymer and Petrochemical Institute-
Descrição: dc.descriptionDepartment of Chemical Engineering University of Tehran-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences, SP-
Descrição: dc.descriptionThe contribution of the first and second authors is equal.-
Descrição: dc.descriptionSão Paulo State University (Unesp) School of Technology and Sciences, SP-
Idioma: dc.languageen-
Relação: dc.relationArabian Journal of Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDuctility-
Palavras-chave: dc.subjectEpoxidized soybean oil-
Palavras-chave: dc.subjectFood packaging-
Palavras-chave: dc.subjectPolylactic acid-
Palavras-chave: dc.subjectZinc oxide-
Título: dc.titleInvestigation of physico-mechanical, thermal, morphological, and antibacterial effects of bio-based epoxidized soybean oil plasticizer on PLA-ZnO nanocomposites as flexible food packaging: Effect of bio-based epoxidized soybean oil plasticizer on PLA-ZnO nanocomposites-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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