Acetylated cellulose nanostructures as reinforcement materials for PBAT nanocomposites

Author(s)

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

Affiliation

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

• Document type: Journal article
• Source: Polymer Composites; v. 41, n. 7 MAR 2020.
• Web of Science Citations: 6

Abstract

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)

• FAPESP's process: 18/25239-0 - Evaluation of dispersion of modified cellulose nanostructures in bionanocomposites
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 18/11277-7 - PBAT films with cellulose nanostructures treated with essential oils encapsulated for active packaging
• Grantee: Derval dos Santos Rosa
• Support Opportunities: Regular Research Grants