Strong and electrically conductive nanopaper from cellulose nanofibers and polypyrrole
| Autor: | Fabiola Vilaseca, Marc Delgado-Aguilar, Makara Lay, J. Alberto Méndez, Kim Ngun Bun |
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| Rok vydání: | 2016 |
| Předmět: |
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 |
| Zdroj: | Carbohydrate polymers. 152 |
| ISSN: | 1879-1344 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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