期刊
HIGH PERFORMANCE POLYMERS
卷 28, 期 2, 页码 181-188出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954008315576233
关键词
Polysulfone; ammonia-functionalized graphene oxide; nanocomposite; membrane material; mechanical strength
资金
- Romanian National Authority for Scientific Research, Executive Agency for Higher Education, Research, Development and Innovation [PN-II-TE-17/26.04.2013]
The study highlights the first use of ammonia-functionalized graphene oxide (GO-NH2) as an additive to enhance the features of polysulfone (PSF) matrix. Composite membrane materials with different ratios of GO-NH2 (0.25, 0.5, 1, and 1.5 wt%) were obtained by phase inversion method. Subsequently structural and morphological characteristics were investigated by Raman spectroscopy, X-ray diffraction (XRD), scanning, and transmission electron microscopy (TEM). Lastly, mechanical and thermogravimetric studies were performed in order to establish whether GO-NH2 addition influenced PSF/GO-NH2 composite material performance. Raman spectroscopy, XRD, and TEM revealed evenly dispersed GO-NH2 within PSF/GO-NH2 composite membrane material forming exfoliated structures for lower concentration of GO-NH2. An enhancement in both mechanical and thermal characteristics was attained. The decomposition temperature at which the mass loss is 3%, of the composite membrane material with 1 wt% GO-NH2 was increased with 7 degrees C. Conversely, an increase in Young's modulus from 246 MPa to 285 MPa was achieved with the addition of 1 wt% GO-NH2 within the PSF matrix.
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