| Titre : |
Isothermal crystallization behavior of poly(vinylidene fluoride) based membrane with graphene oxide |
| Type de document : |
texte imprimé |
| Auteurs : |
X.-T. Qiao, Auteur ; Lei Gong, Auteur ; S.-H. Chen, Auteur ; S.-P. Zhan, Auteur ; X.-D. Sun, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 398-407 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Cinétique chimique
Cristallisation
Membranes (technologie)
Oxyde de graphène
Polyfluorure de vinylidène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Graphene oxide (GO) sheets were obtained via an improved Hummer's method, and the Poly(vinylidene fluoride) (PVDF)/GO membranes employing GO as nucleating agent were prepared by solution casting. The crystalline behaviors and the crystallization kinetics of PVDF/GO membranes with varying GO concentration were investigated after isothermal crystallization at different temperatures. The results showed that the addition of GO induced the β-phase formation of PVDF. The spherulite diameter reached the peak value when the content of GO was 0.1 wt%, then reduced to the minimum value at 1 wt% GO within the tested temperature range of isothermal crystallization. It is worth mentioning that the relative fraction of β phase F(β) was dramatically improved to 0.85 for the PVDF/GO membrane with 0.5 wt% GO at 155°C. Furthermore, an enhancement of the crystallization rate was observed as the contents of GO increased in the system. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Synthesis of graphene oxide (GO) sheets - Synthesis of PVDF/GO membrane
- RESULTS AND DISCUSSION : Fabrication and characterization of GO - Characterization of PVDF/GO membranes |
| DOI : |
https://doi.org/10.3139/217.3786 |
| En ligne : |
https://drive.google.com/file/d/1ReaJ2CQ_b1EC-ucqyl8uXCr54FVerc_E/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34698 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 4 (08/2020) . - p. 398-407
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