Affiliation:
1. Department of Chemical Engineering, State University of Maringá, Maringá 87020-900, Brazil
2. Department of Informatics, State University of Maringá, Maringá 87020-900, Brazil
Abstract
Aerogels are highly porous and ultralight three-dimensional materials with great potential for various applications. To obtain highly porous and structurally stable aerogels, a carefully designed synthesis process is required. These materials offer flexibility in manipulating their properties, allowing the incorporation of modifying agents according to specific needs. In this study, compounds were synthesized using graphene oxide (GO) and nanocellulose fibers (NFC) through the hydrothermal reduction methodology. Two drying techniques were employed: lyophilization and oven evaporation, resulting in materials called cryogel and xerogel, respectively. Various parameters that can interfere with the properties of these nanomaterials were evaluated. The results indicated that the cryogel dried by lyophilization provided the best applicability due to its structural flexibility after compressions, whereas the xerogel obtained through the oven evaporation process resulted in a compound with high rigidity and disintegration. Structural characterizations demonstrated the successful development of the precursors and promising characteristics in the synthesized nanomaterials. With its flexibility, approximately 98% porosity, low shrinkage rate, light weight, and electrical conductivity, the developed cryogel showed high potential in various applications, such as pressure sensors, electromagnetic shielding, and other research and development fields.
Funder
Manna Ecosystem
Araucária Foundation for Scientific and Technological Development of the State of Paraná
National Council for Scientific and Technological Development (CNPq)—Brazil
Coordination for the Improvement of Higher Education Personnel—Brazil
Softex Campinas Center
Complex of Support Centers for Research
Multiuser Laboratory of UTFPR Londrina
Apucarana Campuses
Subject
Polymers and Plastics,General Chemistry
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