Abstract
A series of novel polyethyleneimine (PEI) modified graphene oxide (PEI-mGO) filled poly(vinyl alcohol) (PVA) nanocomposite (PEI-mGO/PVA) films were prepared by solution-casing for hydrogen gas barrier applications. Hydrophilic PEI was used to simultaneously reduce and modify graphene oxide sheets, thereby facilitating a homogeneous dispersion of PEI-mGO in the PVA matrix. The effects of PEI-mGO on the morphology and properties of the nanocomposite films were examined by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis and field emission scanning electron microscopy. Analogous GO/PVA composites were also prepared and characterized for comparative purposes. The PEI-mGO/PVA nanocomposites showed higher thermal and mechanical stability as well as remarkable improvement in hydrogen gas barrier properties compared to the PVA film; specifically, the PEI-mGO/PVA film having 3.0 wt% of PEI-mGO content exhibited almost 95% decrease in GTR and permeability values compared to PVA film.
| Original language | English |
|---|---|
| Pages (from-to) | 49-56 |
| Number of pages | 8 |
| Journal | Polymer Testing |
| Volume | 50 |
| DOIs | |
| State | Published - 2016.04.1 |
Keywords
- Graphene
- Hydrogen gas transmission rates
- Mechanical properties
- Nanocomposite membrane
- Thermal properties
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Petroleum
- Chemistry
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