| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lindfors, Tom
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2022Shear exfoliated few-layer graphene and cellulose nanocrystal composite as biocompatible anode with efficient charge transfercitations
- 2020Electrochemical synthesis of 3D microstructured composite films of poly(3,4-ethylenedioxythiophene) and reduced nanographene oxidecitations
- 2020Fast high-shear exfoliation of natural flake graphite with temperature control and high yieldcitations
- 2019Reduced graphene oxide as water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films
- 2017Improved water barrier properties of polylactic acid films with an amorphous hydrogenated carbon (a-C:H) coatingcitations
- 2016Few-layer graphene and polyaniline composite as ion-to-electron transducer in silicone rubber solid-contact ion-selective electrodescitations
- 2015Application of composites of graphene derivatives and conducting polymers in solid-state electrochemical sensors
- 2014Dispersible composites of exfoliated graphite and polyaniline with improved electrochemical behaviour for solid-state chemical sensor applicationscitations
- 2014Electrochemical synthesis of poly(3,4-ethylenedioxythiophene) in aqueous dispersion of high porosity reduced graphene oxidecitations
- 2014Biocomposites of Nanofibrillated Cellulose, Polypyrrole, and Silver Nanoparticles with Electroconductive and Antimicrobial Propertiescitations
- 2013Potential cycling stability of graphene and conducting polymer based composite materials for supercapacitor applications
- 2012Electropolymerization of Conducting Polymers in Graphene Oxide Solutions
- 2004The influence of lipophilic additives on the emeraldine base-emeraldine salt transition of polyanilinecitations
Places of action
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conferencepaper
Reduced graphene oxide as water, carbon dioxide and oxygen barrier in plasticized poly(vinyl chloride) films
Abstract
RGO films prepared by chemical reduction of graphene oxide (GO) with hydroiodic acid [1] were sandwiched as a barrier layer in 400 µm thick plasticized PVC films (RGO-PVC) being the main constituent in ion-selective membranes used in potentiometric solid-contact ion-selective electrodes (SCISE). [2-4] We report here that the 10 µm thick RGO barrier efficiently impedes the diffusion of liquid water, CO2 and O2 through plasticized PVC. FTIR-ATR and oxygen transmission rate (OTR) measurements reveal that the embedded RGO barrier completely blocks the CO2 diffusion, while it fully blocks the water diffusion for 16 h and reduces the OTR in average by 85% [2]. These are all causing potential instability and irreproducibility of the SCISEs forming the main obstacle for their commercialization. The FTIR-ATR technique measures water and CO2 on the backside of the polymer film (Fig. 1) by observing changes occurring in the vibrational intensity of the OH stretching bands of water at ca. 3000-3700 cm-1 [5] and CO2 at ca. 2335/2365 cm-1. The FTIR-ATR spectroscopy has been previously used to determine the water uptake in polymers (e.g. PMMA, PET and PVC) [4], but also for studying the detrimental water layer formation in SCISEs [3-5,7,8]. The µm-thick RGO films used here are easier to handle and incorporate in host polymers, and they form more robust barriers than mono-, few- and multilayer graphene commonly applied as barriers for liquids and gases. Moreover, we show that the FTIR-ATR spectroscopy is a very sensitive and simple technique for studying low levels of water diffusing through RGO and RGO-PVC compared to gravimetric techniques. We have also measured the electrical conductivity and water contact angles of the RGO films and characterized them with Raman spectroscopy, XRD, XPS and SEM. References [1] S. Pei, J. Zhao, J. Du, W. Ren, H.-M. Cheng, Carbon, 44, 4466 (2010) [2] N.M. Nguyen Huynh, Z.A. Boeva, J.-H. Smått, M. Pesonen, T. Lindfors, RSC Adv., 8, 17645 (2018) [3] N. He, S. Papp, T. Lindfors, L. Höfler, R.-M. ...