1. Strong and electrically conductive nanopaper from cellulose nanofibers and polypyrrole
- Author
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Fabiola Vilaseca, Marc Delgado-Aguilar, Makara Lay, J. Alberto Méndez, and Kim Ngun Bun
- Subjects
Paper ,Materials science ,Polymers and Plastics ,Polymers ,Nanofibers ,02 engineering and technology ,010402 general chemistry ,Polypyrrole ,01 natural sciences ,Nanocomposites ,Polymerization ,chemistry.chemical_compound ,Hardness ,Elastic Modulus ,Tensile Strength ,Ultimate tensile strength ,Materials Chemistry ,Pyrroles ,Composite material ,Cellulose ,Elastic modulus ,Electrical conductor ,Organic Chemistry ,Electric Conductivity ,021001 nanoscience & nanotechnology ,Pinus ,0104 chemical sciences ,chemistry ,Thin-film transistor ,Nanofiber ,0210 nano-technology ,Shear Strength - Abstract
In this work, we prepare cellulose nanopapers of high mechanical performance and with the electrical conductivity of a semiconductor. Cellulose nanofibers (CNF) from bleached softwood pulp were coated with polypyrrole (PPy) via in situ chemical polymerization, in presence of iron chloride (III) as oxidant agent. The structure and morphology of nanopapers were studied, as well as their thermal, mechanical and conductive properties. Nanopaper from pure CNF exhibited a very high tensile response (224 MPa tensile strength and 14.5 GPa elastic modulus). The addition of up to maximum 20% of polypyrrole gave CNF/PPy nanopapers of high flexibility and still good mechanical properties (94 MPa strength and 8.8 GPa modulus). The electrical conductivity of the resulting CNF/PPy nanopaper was of 5.2 10 −2 S cm −1 , with a specific capacitance of 7.4 F g −1 . The final materials are strong and conductive nanopapers that can find application as biodegradable flexible thin-film transistor (TFT) or as flexible biosensor.
- Published
- 2016