| Titre : |
Polymer blends with fibrillar phase morphology prepared by self-reinforcing technique : I. Blends of isotactic polypropylene and polyamide-12 |
| Type de document : |
texte imprimé |
| Auteurs : |
J. Varga, Auteur ; A. Breining, Auteur ; G. W. Ehrenstein, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 53-62 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
High-strength, high-modulus products with a characteristic phase morphology were prepared via the injection molding of blends of isotactic polypropylene (PP) and polyamide-12 (PA-12) under special processing conditions (low melt temperature, high holding pressure, and a convergent sprue design). These conditions generated a situation in which the dispersed phase can be distributed in the self-reinforced matrix as oriented fibrils. Optical (polarized light optical and phase contrast) microscopic and SEM investigations revealed a uniform distribution of the dispersed phase within the matrix. These products can be regarded as in situ thermoplastic composites. The strength level of the self-reinforced blends is approximately twice as high as that of the products processed under conventional conditions. The PA-12 phase dispersed as ultrathin fibrils enhances the flexural impact strength of the blends, decreases their notch sensitivity, and alters its fracture mechanism. |
| Note de contenu : |
- Characteristics of crystallization and melting of PP/PA-12 blends
- Preparation and mechanical characterization of self-reinforced blends
- The structure of self-reinforced blends
- Comparative experiments with other PP-12 types
- Characteristics of the fracture mechanics of self-reinforced blends |
| DOI : |
10.3139/217.1580 |
| En ligne : |
https://drive.google.com/file/d/14Vs607N40yfo5CxAo3GhWiBn40-Q_hhz/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16074 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XV, N° 1 (03/2000) . - p. 53-62
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Polymer blends with fibrillar phase morphology prepared by self-reinforcing technique in INTERNATIONAL POLYMER PROCESSING, Vol. XV, N° 1 (03/2000)
