A New Ozonated Cassava Film with the Addition of Cellulose Nanofibres: Production and Characterization of Mechanical, Barrier and Functional Properties

Author(s)

La Fuente, Carla I. A. ^[1] ; de Souza, Andressa Tamyris ^[2] ; Tadini, Carmen C. ^{[3, 4, 2]} ; Augusto, Pedro Esteves Duarte ^{[3, 1]}

Affiliation

^[1] Univ Sao Paulo, Dept Agrifood Ind Food & Nutr LAN, Luiz de Queiroz Coll Agr ESALQ, Ave Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[2] Univ Sao Paulo, Dept Chem Engn, Escola Politec, Main Campus, BR-05508010 Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Food & Nutr Res Ctr NAPAN, Sao Paulo, SP - Brazil

^[4] Univ Sao Paulo, Food Res Ctr FoRC NAPAN, Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF POLYMERS AND THE ENVIRONMENT; v. 29, n. 6 JAN 2021.
• Web of Science Citations: 0

Abstract

In this study cassava starch modified by ozone technology and cellulose nanofibres were used to produce films. These nanocomposites were produced by casting technique using non-modified and ozonated cassava starches, glycerol and, water reinforced with cellulose nanofibres (NCF) at 1%, 2%, and 5%. Films were characterized in terms of mechanical, barrier and functional properties, morphology, opacity and the sealing ability. In general, ozonated cassava films result in increased mechanical properties, water vapour permeability, and hydrophilicity. The addition of cellulose nanofibres, in certain conditions, improved these properties due to the NCF dispersion in the polymeric matrix. However, the formation of agglomerates in higher concentrations (2% and 5%) was visible by SEM images. In specific, the addition of 1% of NCF to the 60 min ozonated film increased the Tensile Strength and the Young Modulus in similar to 117% and similar to 137%, respectively, and decreased the water vapour permeability in similar to 47%, in comparison to the non-modified film without NCF. In conclusion, the addition of NCF to ozonated cassava films improved their properties aiming specific application showing to be an interesting alternative for packaging industries in different areas. {[}GRAPHICS] . (AU)

• FAPESP's process: 17/05307-8 - Ozone-modified cassava starch to produce biodegradable films
• Grantee: Carla Ivonne La Fuente Arias
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 18/24291-8 - Biodegradable films produced with ozone-modified cassava starch reinforced with nanocellulose
• Grantee: Andressa Tamyris de Souza
• Support Opportunities: Scholarships in Brazil - Scientific Initiation