| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5205829 | Polymer Testing | 2016 | 8 Pages |
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 3.0Â wt% of PEI-mGO content exhibited almost 95% decrease in GTR and permeability values compared to PVA film.
Related Topics
Physical Sciences and Engineering
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Authors
Hongyu Liu, Parthasarathi Bandyopadhyay, Nam Hoon Kim, Bongho Moon, Joong Hee Lee,