LDPE/EVA/graphene nanocomposites with enhanced mechanical and gas permeability properties |
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| Authors: | Meysam Tayebi Ahmad Ramazani SA M T Hamed Mosavian Ahmad Tayyebi |
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| Affiliation: | 1. Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;2. Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran;3. Department of Energy Engineering, Sharif University of Technology, Tehran, Iran |
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| Abstract: | In the present work, graphene oxide (GO) and reduced graphene oxide (RGO) were incorporated at low‐density polyethylene (LDPE)/ethylene vinyl acetate (EVA) copolymer blend using solution casting method. Monolayer GO with 1‐nm thickness and good transparency was synthesized using the well‐known Hummers's method. Fourier transform infrared and X‐ray photoelectron spectroscopy data exhibited efficient reduction of GO with almost high C/O ratio of RGO. Scanning electron microscopy showed the well distribution of GO and RGO within LDPE/EVA polymer matrix. The integrating effects of GO and RGO on mechanical and gas permeability of prepared films were examined. Young's modulus of nanocomposites are improved 65% and 92% by adding 7 wt% of GO and RGO, respectively. The tensile measurements showed that maximum tensile strength emerged in 3 wt% of loading for RGO and 5 wt% for GO. The measured oxygen and carbon dioxide permeability represented noticeably the attenuation of gas permeability in composite films compared with pristine LDPE/EVA blend. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | LDPE/EVA graphene oxide reduced graphene oxide mechanical properties gas permeability |
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