Fabrication of Transparent Nanocellulose Paper from Plant Sources for Energy Devices
Notice bibliographique
Résumé
Over the past decades, electronic waste has accumulated and has increased by 21% in the last five \nyears. Recently, a UN report founded that the world dumped a gross record of 53.6 million tonnes \nof e-waste across last year. In the past, electronics had limitations due to their size constraint but \nwith technological growth, electronics have now become a prominent part of the waste stream. \nPlastic substrates such as polyethylene (PET) and polycarbonate (PC) has been used pervasively \nin electronic devices. But due to their low co-efficient of thermal expansion (CTE), low \nrecyclability and immense levels of pollution, a new state-of-art technology the cellulose \nnanopaper (CNP) has shown immense potential to replace plastic as a substrate in optoelectronics. \nBio-derived decomposable electronics have exhibited great prospective to reduce the \nenvironmental footprint and avoid the surplus amounts of plastic based waste. \nThis project reports about a nanopaper fabricated from self-assembled network structure from \nnanoscale building blocks known as cellulose nanofibers (CNF). Nanofibers from two distinct \nsources were tested – (a) Cannabis sativa - Hemp (b) Softwood – Pine. Hemp CNFs provided by \nIND Hemp, United States in association with Tangho Green Inc., Canada was prepared via alkaline \nand acid hydrolysis along with high compression grinding and a cellulose purity of 97% was \nobtained. Pine CNFs were purchased from Forestry Department of University of Maine, USA had \na >98% purity spectrum. A comprehensive study of CNP’sstructure-property relationship has been \nestablished under different processing conditions such as temperature of drying and CNF \ngrammage, through characterization analyses. Two main nanopaper fabrication techniques of \nSolution Casting and Vacuum Filtration were studied in detail. Secondary objective comprised of \noptimizing optical properties of CNPs by adding polymers like Poly (vinyl alcohol) (PVA) and \nPolymethyl methacrylate (PMMA). Both PVA and PMMA showed considerable compatibility \nwith CNF as a way of making them transparent. \nThe project was rounded off by incorporating Silver Nanowires (AgNWs) which was chosen as a \nconductive nano-filler due to its well-expressed aspect ratio. AgNWs showed high conductivity \nwith increasing its loading density (mg/cm2 \n) or grammage. The films showed a resistivity as low \nas 9.45 ohm.µm with higher grammage of nanowire added. The results showed that nanocellulose \nchanged their nature from insulator to conductor after addition of conductive materials. Moreover, \niv \nthe highest conductivity around 1.05 kS/cm was obtained with maximum amounts of nanowire \ndeposited. \nThis work solely presents a trend for the application of this conductive nanopaper in foldable or \nflexible electronics such as solar cells, OLEDS, electrodes or electronic skin for \nelectrophysiological monitoring.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».