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Preparation and Characterization of Bionanocomposite Films Based on Wheat Starch and Reinforced With Cellulose Nanocrystals

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http://hdl.handle.net/2183/28275
Atribución 4.0 Internacional (CC BY 4.0)
Except where otherwise noted, this item's license is described as Atribución 4.0 Internacional (CC BY 4.0)
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Title
Preparation and Characterization of Bionanocomposite Films Based on Wheat Starch and Reinforced With Cellulose Nanocrystals
Author(s)
Montero, Belén
Rico, Maite
Barral, Luis
Bouza, Rebeca
López, Joaquín
Schmidt, Anja
Bittmann-Hennes, Birgit
Date
2021
Citation
Montero, B., Rico, M., Barral, L. et al. Preparation and characterization of bionanocomposite films based on wheat starch and reinforced with cellulose nanocrystals. Cellulose 28, 7781–7793 (2021). https://doi.org/10.1007/s10570-021-04017-z
Abstract
[Abstract] In recent times, the attention of scientific community has been focusing on the replacement of petroleum-based polymers by others more environmentally friendly. In this sense, bionanocomposites based on glycerol-plasticized wheat starch and reinforced with cellulose nanocrystals (CNCs) were prepared by a solvent-casting process to obtain environmentally friendly films. The plasticization process was proven to be complete in the conditions used and no residual crystallinity was observed in any case. The incorporation of CNCs leads to materials with increased rigidity (about 1000% increment in modulus) which is related to a good filler-matrix interaction and to the formation of a rigid crystalline network of cellulose. This fact allowed also to improve the moisture resistance and the barrier properties (in both, oxygen and water vapor as permeant) of the bionanocomposite films due to the formation of a tortuous path, which prevent the gas diffusion. Moreover, the thermal stability of films was not affected by the filler incorporation. These improvements in the properties make these films susceptible to be used in short-time applications in the food packaging industry.
Keywords
Thermoplastic starch
Solvent casting
Bionanocomposite films
Wheat starch
Cellulose nanocrystals
 
Description
Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG
Editor version
https://doi.org/10.1007/s10570-021-04017-z
Rights
Atribución 4.0 Internacional (CC BY 4.0)

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