Production and characterization of nanocellular polyphenylsulfone foams
| Autor: | J. Martín-de León, Victoria Bernardo, Miguel Angel Rodriguez-Perez |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Range (particle radiation) Materials science Polyphenylsulfone Vapor pressure Mechanical Engineering Nucleation 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Matrix (chemical analysis) chemistry.chemical_compound chemistry Mechanics of Materials General Materials Science Composite material 0210 nano-technology Nanoscopic scale Dissolution |
| Zdroj: | Materials Letters. 178:155-158 |
| ISSN: | 0167-577X |
| Popis: | Nanocellular foams have been produced by means of a gas dissolution process using polyphenylsulfone (PPSU) as matrix polymer. Cell sizes in the range 20–30 nm and cell nucleation densities higher than 10 15 cm −3 have been achieved for materials with relative densities in the range 0.65–0.75. The influence of both saturation pressure and foaming temperature has been studied. On the one hand, it has been proved that there is a large influence of the amount of gas (CO 2 ) absorbed in the final cellular structure, in fact it has been found a critical CO 2 uptake between 9% and 9.5% at which the cell sizes evolve from the micro to the nanoscale. On the other hand, it has been found that there is a wide range of foaming parameters (foaming time and foaming temperature) in which nanocellular foams can be produced. |
| Databáze: | OpenAIRE |
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