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    Películas biodegradables: la incorporación de microfibras y nanofibras de celulosa obtenido a partir de fuentes vegetales

    Filmes Biodegradáveis: Incorporação de Microfibras e Nanofibras de Celulose Obtidas de Fontes Vegetais

    Filmes Biodegradáveis: Incorporação de Microfibras e Nanofibras de Celulose Obtidas de Fontes Vegetais

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    Author
    Andrade Mahecha, Margarita María
    Tapia Blácido, Delia Rita
    Menegalli, Florencia Cecilia
    Publisher
    Universidad Nacional Abierta y a Distancia, UNAD

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    TY - GEN T1 - Filmes Biodegradáveis: Incorporação de Microfibras e Nanofibras de Celulose Obtidas de Fontes Vegetais T1 - Películas biodegradables: la incorporación de microfibras y nanofibras de celulosa obtenido a partir de fuentes vegetales AU - Andrade Mahecha, Margarita María AU - Tapia Blácido, Delia Rita AU - Menegalli, Florencia Cecilia UR - https://repository.unad.edu.co/handle/10596/29765 PB - Universidad Nacional Abierta y a Distancia, UNAD AB - ER - @misc{10596_29765, author = {Andrade Mahecha Margarita María and Tapia Blácido Delia Rita and Menegalli Florencia Cecilia}, title = {Filmes Biodegradáveis: Incorporação de Microfibras e Nanofibras de Celulose Obtidas de Fontes VegetaisPelículas biodegradables: la incorporación de microfibras y nanofibras de celulosa obtenido a partir de fuentes vegetales}, year = {}, abstract = {}, url = {https://repository.unad.edu.co/handle/10596/29765} }RT Generic T1 Filmes Biodegradáveis: Incorporação de Microfibras e Nanofibras de Celulose Obtidas de Fontes Vegetais T1 Películas biodegradables: la incorporación de microfibras y nanofibras de celulosa obtenido a partir de fuentes vegetales A1 Andrade Mahecha, Margarita María A1 Tapia Blácido, Delia Rita A1 Menegalli, Florencia Cecilia LK https://repository.unad.edu.co/handle/10596/29765 PB Universidad Nacional Abierta y a Distancia, UNAD AB OL Spanish (121)
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    Abstract
    Diferentes estudos têm evidenciado que a celulose incorporada a matrizes poliméricas atua como um material de reforço, melhorando a resistência mecânica de filmes biodegradáveis e em alguns casos, a permeabilidade ao vapor de água. A eficácia deste reforço está associada à natureza da celulose, sua cristalinidade e as características da interface reforço/matriz polimérica. O estudo de microfibras e nanofibras de celulose como uma fase de reforço em filmes biodegradáveis começou há 15 anos. Desde então, tem aumentado o interesse em desenvolver metodologias focadas ao aproveitamento de resíduos agrícolas para a obtenção de fibras e a incorporação desses materiais em matrizes poliméricas. Diante disto, este trabalho apresenta uma revisão bibliográfica sobre microfibras e nanofibras de celulose como materiais de reforço em filmes biodegradáveis a base de biopolímeros. Abordam-se tópicos como as fibras vegetais, dada sua natureza lignocelulósica, as diferenças entre microfibras e nanofibras, fontes vegetais exploradas e métodos desenvolvidos na última década para a obtenção desses materiais. Finalmente, uma compilação de trabalhos recentes sobre microcompósitos e nanocompósitos biodegradáveis mostra resultados promissores nas propriedades mecânicas e de barreira dessas estruturas poliméricas. A informação apresentada evidencia o potencial desta área de pesquisa para futuros trabalhos que podem ser conduzidos para desenvolvimento de tecnologia de produção desses materiais em escala industrial e sua utilização como embalagens de alimentos
     
    Different studies have shown that cellulose incorporated into polymeric matrices acts as a reinforcing material that improves the mechanical strength of biodegradable films and, in some cases, the water vapor permeability. The efficacy of this reinforcement is associated with the nature of cellulose, its crystallinity, and the characteristics of the reinforcement/polymeric matrix interface. Studies on cellulose micro and nanofibers as a reinforcing phase in biodegradable films began 15 years ago. Since then there has been an increasing interest in the use of agricultural wastes and in the study of processes for the attainment and incorporation of these materials into polymeric matrices. Thus, this paper presents a literature review on cellulose microfibers and nanofibers as reinforcing materials in biodegradable films based on biopolymers. It addresses topics such as vegetable fibers, due to their lignocellulosic nature; differences between micro and nanofibers; the explored vegetable sources; and the methods developed over the last decade in order to obtain these materials. Finally, a compilation of recent works on biodegradable microcomposites and nanocomposites show promising results in terms of the mechanical and barrier properties of these polymeric structures. The presented information reveals the potential of this area for future research into the development of technology for the production of these materials on an industrial scale and their use as food packaging
     
     
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    http://hemeroteca.unad.edu.co/index.php/publicaciones-e-investigacion/article/view/593/1284
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