Shape and Temperature Memory of Nanocomposites with Broadened Glass Transition
| Autor: | Maryse Maugey, Pierre Miaudet, Alain Derré, Cécile Zakri, Rabi Inoubli, Patrick M. Piccione, Philippe Poulin |
|---|---|
| Přispěvatelé: | Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche Rhône-Alpes (CRRA), Arkema (Arkema) |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Nanotube Multidisciplinary Materials science Nanoparticle Young's modulus 02 engineering and technology Polymer Composite nanotubes fibers 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Nanocomposites Stress (mechanics) [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry symbols.namesake chemistry symbols Deformation (engineering) Composite material 0210 nano-technology Glass transition Order of magnitude |
| Zdroj: | Science Science, American Association for the Advancement of Science, 2007, 318, pp. 1294-1296. ⟨10.1126/science.1145593⟩ |
| ISSN: | 0036-8075 1095-9203 |
| DOI: | 10.1126/science.1145593⟩ |
| Popis: | 3 pages; International audience; Shape-memory polymers can revert to their original shape when they are reheated. The stress generated by shape recovery is a growing function of the energy absorbed during deformation at a high temperature; thus, high energy to failure is a necessary condition for strong shape-memory materials. We report on the properties of composite nanotube fibers that exhibit this particular feature. We observed that these composites can generate a stress upon shape recovery up to two orders of magnitude greater than that generated by conventional polymers. In addition, the nanoparticles induce a broadening of the glass transition and a temperature memory with a peak of recovery stress at the temperature of their initial deformation. |
| Databáze: | OpenAIRE |
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