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Investigation ofsurface-pegylatednanocellulose as reinforcing agent onPBATbiodegradable nanocomposites

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Autor(es):
de Souza, Alana Gabrieli ; de Lima, Giovanni Floriano ; Rangari, Vijaya Kumar ; dos Santos Rosa, Derval
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: Polymer Composites; v. 41, n. 10, p. 13-pg., 2020-08-06.
Resumo

In the present work, nanocellulose (NC) has been surface-pegylated and further employed as reinforcement in poly(butylene adipate-co-terephthalate) (PBAT) through the melting process. The nanocomposites showed a significant stiffness increase, especially the 2% pegylated-NC, due to the good interaction between the modified NC and the matrix. Also the pegylation improved the filler-PBAT adhesion, which resulted in higher thermal stability and low crystallinity. Raman spectroscopy confirmed the strong interaction between the 2% pegylated-NC, morphological analysis confirmed the filler adhesion. The water absorption indicated that the pegylated-NC has a low tendency to absorb water, which improves its applicability, for example, as a packaging material. This unique study is of great value for the future design of pegylated-NC biodegradable nanocomposites with tailored properties. (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