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Starch-based nanocomposites with cellulose nanofibers obtained from chemical and mechanical treatments.
Int J Biol Macromol. 2020 Oct 15; 161:132-146.IJ

Abstract

Cellulose nanofibers (CNFs) were isolated from unripe banana peel by acid hydrolysis, with different acid concentrations (0.1%, 1.0% and 10% v/v), followed by mechanical treatment with high-pressure homogenizer. Banana starch-based films added with CNFs (0.2% w/w) as a reinforcing agent were produced by the casting method. The rheological behavior of aqueous dispersions of CNFs (1.0% w/w) and their effects on the properties of nanocomposite films were investigated. All aqueous dispersions of CNFs showed gel-like behavior and, when incorporated to the films, CNFs improved their water barrier properties and mechanical resistance as demonstrated by the increase in tensile strength and Young's modulus. Moreover, CNFs were well dispersed in the composite matrix. CNFs prepared at higher concentration, followed by mechanical treatment (FNM1 and FNM10), formed films with low moisture (13.66%) and solubility in water (24.1%). Whereas, CNFs prepared at the lowest acid concentration without mechanical treatment (FN0.1) led to films with high elongation at break (30.6%) and good tensile strength (12.3 MPa). Regardless of the used CNFs, all the nanocomposites displayed lower UV/light transmission than control film. The nanocomposite has potential use in food packaging, since the use of CNFs can promote improvements on barrier, optical and mechanical properties. Cellulose nanofibers isolated from agro-industrial residues offer the potential to reinforce composites of biodegradable polymers, producing a value-added material.

Authors+Show Affiliations

Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP CEP 13083-862, Brazil.Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP CEP 13083-862, Brazil.Institute of Science and Technology, Food Engineering, University of Jequitinhonha and Mucuri, Diamantina, MG CEP 39100-000, Brazil.Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP CEP 13083-862, Brazil.Department of Food Engineering, School of Food Engineering, University of Campinas, Campinas, SP CEP 13083-862, Brazil. Electronic address: rosiane@unicamp.br.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32522543

Citation

Tibolla, H, et al. "Starch-based Nanocomposites With Cellulose Nanofibers Obtained From Chemical and Mechanical Treatments." International Journal of Biological Macromolecules, vol. 161, 2020, pp. 132-146.
Tibolla H, Czaikoski A, Pelissari FM, et al. Starch-based nanocomposites with cellulose nanofibers obtained from chemical and mechanical treatments. Int J Biol Macromol. 2020;161:132-146.
Tibolla, H., Czaikoski, A., Pelissari, F. M., Menegalli, F. C., & Cunha, R. L. (2020). Starch-based nanocomposites with cellulose nanofibers obtained from chemical and mechanical treatments. International Journal of Biological Macromolecules, 161, 132-146. https://doi.org/10.1016/j.ijbiomac.2020.05.194
Tibolla H, et al. Starch-based Nanocomposites With Cellulose Nanofibers Obtained From Chemical and Mechanical Treatments. Int J Biol Macromol. 2020 Oct 15;161:132-146. PubMed PMID: 32522543.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Starch-based nanocomposites with cellulose nanofibers obtained from chemical and mechanical treatments. AU - Tibolla,H, AU - Czaikoski,A, AU - Pelissari,F M, AU - Menegalli,F C, AU - Cunha,R L, Y1 - 2020/06/06/ PY - 2020/02/07/received PY - 2020/04/22/revised PY - 2020/05/22/accepted PY - 2020/6/12/pubmed PY - 2021/3/27/medline PY - 2020/6/12/entrez KW - Acid hydrolysis KW - Biodegradable film KW - Rheology behavior SP - 132 EP - 146 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 161 N2 - Cellulose nanofibers (CNFs) were isolated from unripe banana peel by acid hydrolysis, with different acid concentrations (0.1%, 1.0% and 10% v/v), followed by mechanical treatment with high-pressure homogenizer. Banana starch-based films added with CNFs (0.2% w/w) as a reinforcing agent were produced by the casting method. The rheological behavior of aqueous dispersions of CNFs (1.0% w/w) and their effects on the properties of nanocomposite films were investigated. All aqueous dispersions of CNFs showed gel-like behavior and, when incorporated to the films, CNFs improved their water barrier properties and mechanical resistance as demonstrated by the increase in tensile strength and Young's modulus. Moreover, CNFs were well dispersed in the composite matrix. CNFs prepared at higher concentration, followed by mechanical treatment (FNM1 and FNM10), formed films with low moisture (13.66%) and solubility in water (24.1%). Whereas, CNFs prepared at the lowest acid concentration without mechanical treatment (FN0.1) led to films with high elongation at break (30.6%) and good tensile strength (12.3 MPa). Regardless of the used CNFs, all the nanocomposites displayed lower UV/light transmission than control film. The nanocomposite has potential use in food packaging, since the use of CNFs can promote improvements on barrier, optical and mechanical properties. Cellulose nanofibers isolated from agro-industrial residues offer the potential to reinforce composites of biodegradable polymers, producing a value-added material. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/32522543/Starch_based_nanocomposites_with_cellulose_nanofibers_obtained_from_chemical_and_mechanical_treatments_ DB - PRIME DP - Unbound Medicine ER -