Autor(es)

Las-Casas, Bruno ; Arantes, Valdeir

• Tipo de documento: Artigo Científico
• Fonte: Carbohydrate Polymers; v. 334, p. 17-pg., 2024-03-13.

Resumo

Barrier materials are crucial in preserving product quality, safety and longevity across numerous applications, thereby contributing to sustainability, reducing waste and advancing technology. Among these materials, cellulose nanomaterials (CNs) have emerged as promising alternatives for traditional petroleum-based polymers. However, the wide range of sources and the different methods used to isolate and process CN-based materials can result in significant variations in moisture and oxygen barrier performance. In this review, we provide an indepth discussion on the latest advancements in CN-based green barrier materials. We begin by offering a critical assessment of the barrier performance of CNs, both in their isolated form and when combined as hybrid materials. This includes their applications as standalone films, fillers and coatings in nanocomposites. This review also covers the influence of the isolation process and the stages of film formation on barrier efficacy. We further discuss the implications of the recycling process on barrier properties of CN-based materials, drawing a connection between barrier characteristics and the product's end-of-life. We conclude by highlighting the significant developments over the past five years, the present challenges, and the prospective future of CN-based materials in barrier applications. (AU)

• Processo FAPESP: 21/07023-2 - Desenvolvimento de uma plataforma tecnologia baseada em enzimas para produção e modulação de nanocelulose: validação para aplicações biomédicas e embalagens ativas
• Beneficiário: Valdeir Arantes
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2
• Processo FAPESP: 21/04324-1 - Aplicação de tratamentos enzimáticos e nanopartículas de lignina no desenvolvimento de nanocelulose customizada para fabricação de embalagem ativa e sustentável
• Beneficiário: Bruno Las Casas Chaves
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto