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PubMed Publications| Keyword search (4,163 papers available) |  |
"properties" Keyword-tagged Publications:
| Title: | Synthesis and Characterization of CNC/CNF/rGO Composite Films for Advanced Functional Applications | ||||
| Authors: | Ramezani G, Stiharu I, van de Ven TGM, Ramezani H, Nerguizian V | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/41900273/ | ||||
| DOI: | 10.3390/mi17030387 | ||||
| Publication: | Micromachines | ||||
| Keywords: | cellulose nanocrystals; cellulose nanofibrils; composite films; dielectric spectroscopy; electrical conductivity; mechanical properties; reduced graphene oxide; | ||||
| PMID: | 41900273 | Category: | Date Added: | 2026-03-28 | |
| Dept Affiliation: |
ENCS
1 Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC H3G 1M8, Canada. 2 Department of Chemistry, McGill University, Montreal, QC H4A 3J1, Canada. 3 Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA. 4 Département de Génie Électrique, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada. |
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Description: |
Developing advanced functional materials requires the synergistic integration of nanoscale reinforcements with tailored properties. In this work, composite films of cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), and reduced graphene oxide (rGO) were synthesized using a combination of solution casting, high shear homogenization, vacuum filtration, and environmentally friendly chemical reduction. The resulting CNC/CNF/rGO films exhibited a robust hierarchical structure with strong interfacial interactions, enabling exceptional mechanical properties, specifically a tensile strength of 215 MPa and a Young's modulus of 18 GPa, alongside a continuous conductive network confirmed by frequency-independent electrical conductivity up to 30 kHz. Comprehensive dielectric characterization revealed frequency-dependent permittivity and low dielectric loss, aligning with Maxwell-Wagner theoretical predictions for heterogeneous composites. The composites also demonstrated thermal stability, with electrical conductivity increasing monotonically from 0 °C to 200 °C. These findings highlighted the CNC/CNF/rGO films' suitability for applications in flexible electronics, electromagnetic shielding, packaging, and high-performance structural materials. Future optimization and modeling approaches, including fractional calculus, are recommended to further enhance multifunctionality and exploit the unique synergistic interactions intrinsic to nanocellulose-graphene oxide platforms. |
