Acetylated cellulose nanostructures as reinforcement materials for PBAT nanocomposites

Autor(es)

Barbosa, Rennan F. S. ^[1] ; Souza, Alana G. ^[1] ; Rosa, Derval S. ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ ABC, Ctr Engn Modelagem & Ciencias Sociais Aplicadas C, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Polymer Composites; v. 41, n. 7 MAR 2020.
• Citações Web of Science: 6

Resumo

Acetylated-cellulose nanostructures (CNS) were used as reinforcing agent to develop poly(butylene adipate-co-terephthalate)-PBAT-nanocomposites with 1, 3, 5, and 10 wt% of modified and nonmodified nanoparticles through solvent casting. This study explains the interactions between the reactive groups CNS and PBAT interact and the influence of this interaction in the mechanical and thermal properties of the composites. The nonmodified CNS showed a noncontinuous increase in the PBAT stiffness, due to the low interaction between the reinforcement and the matrix and low CNS dispersion. The best results were obtained to acetylated CNS due to the intermolecular interactions between the acetyl groups and the polymer chains. Probably the acetyl groups interfered in the atomic vibration relative to the functional groups of the matrix, which is indicative of the interaction and enhancement of the internal cohesion of the components. (AU)

• Processo FAPESP: 18/25239-0 - Evolução da dispersão de nanoestruturas de celulose modificadas aplicadas em bionanocompósitos
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Processo FAPESP: 18/11277-7 - Filmes de PBAT com nanoestruturas de celulose tratadas com óleos essenciais encapsulados para embalagens ativas
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Auxílio à Pesquisa - Regular