Nfc nanocomposites structureds using CNC as mechanical agent for reinforced strength properties
Nfc nanocomposites structureds using CNC as mechanical agent for reinforced strength properties
DOI:
https://doi.org/10.51473/rcmos.v1i2.2025.1278Keywords:
Nanocrystals, nanofibrillated cellulose, nanocomposites, nanofilms.Abstract
The development of nanocomposites forming films from nanofibrillated cellulose (NFC) and nanocrystalline cellulose (CNC) present as a sustainable alternative for application in many industrial materials, due to their different mechanical and optical characteristics. Thus the aim of this study was to evaluate the potential of NFC and CNC in the production of transparent nanocomposites with high mechanical resistance. The NFC-CNC nanocomposites were produced according to casting technique, using as the polymeric matrix CNF dispersion for different dosages CNC as mechanical reinforcement. The base polymer NFC used 10 g/m² for this nanocelulose that in its suspended form as CNC was applied in doses of 3%, 6% and 12% after suspension in water. The addition of cellulose nanocrystals allowed the reduction of the surface roughness of the resulting nanocomposites. The maximum load increased 103 and 287% for CNC applications 3 and 12% respectively. While the modulus increased 591% to 12% of the dose CNC. The tensile strength increased from 61% with the addition of 12% CNC. Likewise, the physical properties of apparent specific volume and weight showed significant gains. Due to CNC incorporation allowed reducing the opacity to 53% with consequent increased in transparency of nanocomposites. Nanocomposites containing CNC showed higher thermal stability with less weight loss compared to references containing only CNF. The CNC incorporated into the NFC polymeric matrix, results in the nanocomposite formation with high strength and transparency, is a viable alternative technology.
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Copyright (c) 2025 Renato Augusto Pereira Damásio, Cícero Pola, Fernando Jose Borges Gomes, Elenice Maia, Jorge Luiz Colodette (Autor)
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