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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nanocellulose reinforced starch biocomposite films via tape-casting technique

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Author(s):
Giovana Ladislau Garuti [1] ; Roberta Ranielle Matos de Freitas [2] ; Vitor Hugo de Lima [3] ; Karina Palmizani do Carmo [4] ; Franciane Andrade de Pádua [5] ; Vagner Roberto Botaro
Total Authors: 6
Affiliation:
[1] Universidade Federal de São Carlos. Laboratório de Materiais Poliméricos e Bioenergia - Brasil
[2] Universidade Federal de São Carlos. Laboratório de Materiais Poliméricos e Bioenergia - Brasil
[3] Universidade Federal de São Carlos. Laboratório de Materiais Poliméricos e Bioenergia - Brasil
[4] Universidade Federal de Ouro Preto. Laboratório de Materiais Poliméricos - Brasil
[5] Universidade Federal de São Carlos. Laboratório de Materiais Poliméricos e Bioenergia - Brasil
Total Affiliations: 6
Document type: Journal article
Source: POLIMEROS-CIENCIA E TECNOLOGIA; v. 34, n. 1 2024-03-01.
Abstract

Abstract The objective of this study was to characterize the physicochemical-mechanical properties of corn and cassava starch films reinforced with CNF via Tape-Casting. There were differences in size and shape of the starch granules. Corn starch nanocomposites (NCO) showed a significant increase in tensile strength (5.14 to 25.58 MPa) and significant decrease in strain (24.81 to 2.76%) as the CNF concentration increased. Among the cassava starch nanocomposites (NCA), only the cassava starch sample with 1% CNF (NCA-1) showed significant difference both in the maximum stress (4.94 MPa) and strain (15.17%). The corn starch sample with 2% of CNF (NCO-2) presented a lower roughness and NCA-1 a smooth surface. There was no difference in chemical composition between the samples. The CNF-free starch films showed more transparency than other films. The NCA showed more transparency than NCO. Tape-casting technique unveils enhanced mechanical properties of cellulose nanofiber-reinforced starch films. Starch nanocomposites exhibit improved tensile strength and surface characteristics. (AU)

FAPESP's process: 16/19896-2 - Study of dynamic thermal-mechanical behavior of polymeric hydrogels films for application as future biocompatible materials
Grantee:Vagner Roberto Botaro
Support Opportunities: Regular Research Grants