Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Tensile Properties of Thermoplastic Starch Nanocomposite Films with Sisal (Agave sisalana) Nanofibers

Mailson Batista de Vilhena
,
Marcos Vinícius da Silva Paula
* ORCID logo ,
Raul Costa de Oliveira
,
Diego Cardoso Estumano
ORCID logo ,
Bruno Marques Viegas
ORCID logo ,
Emerson Cardoso Rodrigues
,
Emanuel Negrão Mâcedo
,
José Antônio da Silva Souza
,
Edinaldo José de Sousa Cunha
Version 1 : Received: 18 April 2024 / Approved: 19 April 2024 / Online: 22 April 2024 (12:13:42 CEST)

How to cite: de Vilhena, M.B.; Paula, M.V.D.S.; de Oliveira, R.C.; Estumano, D.C.; Viegas, B.M.; Rodrigues, E.C.; Mâcedo, E.N.; Souza, J.A.D.S.; Cunha, E.J.D.S. Tensile Properties of Thermoplastic Starch Nanocomposite Films with Sisal (Agave sisalana) Nanofibers. Preprints 2024, 2024041319. https://doi.org/10.20944/preprints202404.1319.v1 de Vilhena, M.B.; Paula, M.V.D.S.; de Oliveira, R.C.; Estumano, D.C.; Viegas, B.M.; Rodrigues, E.C.; Mâcedo, E.N.; Souza, J.A.D.S.; Cunha, E.J.D.S. Tensile Properties of Thermoplastic Starch Nanocomposite Films with Sisal (Agave sisalana) Nanofibers. Preprints 2024, 2024041319. https://doi.org/10.20944/preprints202404.1319.v1

Abstract

Currently, petroleum-derived plastics are widely used. However, one of its main disadvantages is its low degradation time, which is not beneficial to the environment. Therefore, natural polymers are an alternative to overcome this obstacle. Among the natural polymers, starch can be highlighted. Thus, the objectives of our investigation were to obtain sisal nanofibers using low concentrations of acid solutions to produce and characterize corn starch nanocomposites reinforced with these nanofibers. The films were produced by a casting technique using commercial corn starch and glycerol as plasticizing agents; the nanofibers were obtained using acid hydrolysis. The films were subjected to tensile tests to evaluate their resulting mechanical behaviors. The results of X-ray diffraction and transmission electron microscopy analyses revealed the possibility of obtaining cellulose nanofibers using a sulfuric acid concentration lower than that previously reported in the literature. The nanocomposites reinforced with plant nanofibers showed lower tensile stress and elongation characteristics than the matrices without nanofibers.

Keywords

thermoplastic starch; cellulose nanofibers; sisal; acid hydrolysis; corn starch; Rietveld refinement

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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