| Titre : |
Effect of annealing temperature on PP microporous membranes obtaines by a melt-extrusion-stretching method |
| Type de document : |
texte imprimé |
| Auteurs : |
Z. Y. Liu, Auteur ; X.-T. Wu, Auteur ; J. Yan, Auteur ; W. Yang, Auteur ; M.-B. Yang, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 467-474 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Etat fondu (matériaux)
Extrusion par étirage
Matériaux poreux
Membranes (technologie)
Polypropylène
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Isotactic polypropylene (iPP) precursor film with highly oriented lamellar structure was produced through a melt extrusion-annealing-uniaxial stretching (MAUS) process. The precursor films were annealed at various temperatures and the structure evolution of precursor films during various annealing temperatures and the pore formation of the annealed film during stretching were investigated. During annealing, recrystallized lamellar structure was formed to obtain “core-shell sandwich” structure. The thickness of newly formed lamellae increased with annealing temperature, which improved the ability of slipping resistance of the original lamellar structure during stretching. As the annealing temperature of precursor film increased, the micropore shape and diameter of the final membranes became more uniform. The porosity of the microporous membranes increased with increasing annealing temperature. |
| Note de contenu : |
- EXPERIMENTAL : Material and membrane preparation - Characterization
- RESULTS AND DISCUSSION : Effect of annealing temperature on the lamellar structure of the precursor films - Effect of annealing temperature on the tensile deformation behavior of the precursor films - Effect of annealing on the performance of the microporous membranes - Discussion |
| DOI : |
10.3139/217.3774 |
| En ligne : |
https://www.degruyter.com/document/doi/10.3139/217.3774/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33065 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 4 (08/2019) . - p. 467-474
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