Hot-Drawing of Single and Multiwall Carbon Nanotube Fibers for High Toughness and Alignment
| Autor: | Pascale Launois, Vincent Pichot, Philippe Poulin, M Maugey, Pierre Miaudet, S Badaire, A Derré, C Zakri |
|---|---|
| Přispěvatelé: | Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Toughness
Vinyl alcohol Nanotube Materials science Composite number Bioengineering 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound Crystallinity Fracture toughness Hot working law General Materials Science Composite material [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ComputingMilieux_MISCELLANEOUS [PHYS]Physics [physics] Mechanical Engineering General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology |
| Zdroj: | Nano Letters Nano Letters, American Chemical Society, 2005, 5 (11), pp.2212-2215. ⟨10.1021/nl051419w⟩ |
| ISSN: | 1530-6984 1530-6992 |
| DOI: | 10.1021/nl051419w⟩ |
| Popis: | We report a new hot-drawing process for treating wet-spun composite fibers made of single- and multiwall carbon nanotubes and poly(vinyl alcohol). As shown in previous reports, untreated composite nanotube fibers exhibit a very large strain-to-failure, and their toughness, which is the energy needed to break the fibers, exceeds that of any other known materials. However, untreated composite nanotube fibers absorb a very small amount of energy at low strain and become degraded in humid conditions. In this work, we use hot-drawing treatments, a concept inspired from textile technologies, to improve the properties of nanotube/PVA fibers. This treatment yields a crystallinity increase of the PVA and an unprecedented degree of alignment of the nanotubes. These structural modifications lead to a markedly improved energy absorption at low strain and make the fibers resistant to moisture. Hot-drawn nanotube/PVA fibers hold great potential for a number of applications such as bulletproof vests, protective textiles, helmets, and so forth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|