Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/59306
Título: Valorização do cipó-titica (Heteropsis flexuosa) e óleo de Andiroba (Carapa guianensis) para a produção de filmes celulósicos funcionalizados
Título(s) alternativo(s): Valuation of cipó-titica (heteropsis flexuosa) and andiroba oil (carapa guianensis) for the production of functionalized cellulose films
Autores: Dias, Marali Vilela
Scatolino, Mário Vanoli
Dias, Matheus Cordazzo
Silva, Danillo Wisky
Guimarães Junior, Mário
Palavras-chave: Biopolímeros
Biodegradação
Nanotecnologia
Filmes celulósicos
Óleo de Andiroba
Cipó-titica (Heteropsis flexuosa)
Embalagens biodegradáveis
Filmes funcionalizados
Biopolymers
Biodegradation
Nanotechnology
Cellulosic films
Andiroba Oil
Titica vine (Heteropsis flexuosa)
Biodegradable packaging
Functionalized films
Data do documento: 30-Ago-2024
Editor: Universidade Federal de Lavras
Citação: PAIVA, Cleyson Santos de. Valorização do cipó-titica (Heteropsis flexuosa) e óleo de Andiroba (Carapa guianensis) para a produção de filmes celulósicos funcionalizados. 2024. 79p. Tese (Doutorado em Engenharia de Biomateriais) - Universidade Federal de Lavras, Lavras, 2024.
Resumo: The increasing use of petrochemical-derived polymers, such as plastics, can cause significant environmental damage, destabilizing ecosystems, as they are often improperly disposed of, leading to pollution of both terrestrial and aquatic ecosystems. An alternative to mitigate these impacts is the adoption of polymers from natural sources, such as cellulose, found in various plants. Research on the production, characterization, and application of cellulose at nanometric scales, specifically cellulose nanofibrils (NFC), is growing due to their potential for producing films, aiming to provide sustainable solutions. The use of underexplored raw materials enhances sustainability appeal, with titica vine (Hf) being a viable material in this context. Some substances, such as vegetable oils, can be added to the films to confer functional properties. An example is andiroba oil, known for its antibacterial and insecticidal properties. This study produced and characterized films based on titica vine functionalized with andiroba oil, evaluating their mechanical, barrier, biodegradability, and antioxidant activity properties. The Hf films were stabilized with 5% (w/w) Hydroxypropyl Methylcellulose (HPMC) and added with different concentrations of andiroba oil (AO) emulsified with 2% (w/w) Tween 80: 0, 1, 3, and 5%, with percentages based on the solid content of Hf at 1%. The addition of andiroba oil increased the viscosity of the suspensions and altered the physical properties of the films. The use of andiroba oil resulted in the formation of films with less degradation in aqueous media, a higher contact angle, and a lower wetting capacity, although they exhibited considerable water vapor permeability. The An1 film exhibited hydrophobic character, with a contact angle greater than 93.07°, and higher puncture resistance of 6.70 N mm-1. On the other hand, the An3 films showed greater transparency and biodegradability, while the An5 films resulted in more opaque films with a higher thermal degradation temperature and elevated antioxidant activity. Films derived from Hf fibers functionalized with andiroba oil demonstrated potential as packaging materials for lightweight and low moisture content products, due to their suitable thermal and barrier properties.
URI: http://repositorio.ufla.br/jspui/handle/1/59306
Aparece nas coleções:Engenharia de Biomateriais – Doutorado (Teses)



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