| Titre : |
Simha-Somcynsky equation of state modeling of the PVT behavior of PP/clay-nanocomposite/CO2 mixtures |
| Type de document : |
texte imprimé |
| Auteurs : |
M. M. Hasan, Auteur ; C. B. Park, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 430-439 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Argile
Matériaux hybrides
Mesure de pression-volume-température
Modèles mathématiques
Mousses plastiques
Nanoparticules
Polypropylène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The Pressure-Volume-Temperature (PVT) property of polymer nanocomposite (PNC)/gas solutions is an important fundamental property in the foaming of PNC. However, accurate data have not yet been reported. We examined the PVT behaviors of polypropylene (PP) and PP/organoclay polymer nanocomposite (PP-PNC) by monitoring the swelling changes of the polymer melt in supercritical carbon dioxide (scCO2). A model was adopted that describes the PVT behaviors of PP-PNC with and without dissolved gas. Based on the model, a PNC consists of two sections: a hard section (a nanoparticle surrounded by solidified polymer) and a soft section (neat polymer). It was observed that an infusion of nanoparticles decreased the swelling. It seems that the hard section had a minimal free volume in which to dissolve the blowing agents, and that the number of hard sections increased with the infusion of nanoparticles. As a result, the total gas absorption capacity of the system decreased, and consequently, the swelling also decreased. |
| Note de contenu : |
- THEORETICAL BACKGROUND : Modeling of organoclay nanocomposites - Swelling determination of the PNC system
- EXPERIMENTATION : Materials - Experimental setup - Methodology - Experimental verification
- RESULTS AND DISCUSSION : PVT behavior of PP and PP nanocomposites - Swelling behavior of PP and the PP nanocomposites - Comparison of all three approaches |
| DOI : |
10.3139/217.2815 |
| En ligne : |
https://drive.google.com/file/d/1q238lUO4VfL8_PTAWmTfySU2yaGcE473/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21821 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 4 (08/2014) . - p. 430-439
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