TY - JOUR AU - Nagy, Balázs AU - Domán, Andrea AU - Menyhárd, Alfréd AU - László, Krisztina PY - 2018/01/01 Y2 - 2024/03/29 TI - Influence of Graphene Oxide Incorporation on Resorcinol-Formaldehyde Polymer and Carbon Aerogels JF - Periodica Polytechnica Chemical Engineering JA - Period. Polytech. Chem. Eng. VL - 62 IS - 4 SE - DO - 10.3311/PPch.12915 UR - https://pp.bme.hu/ch/article/view/12915 SP - 441–449 AB - <p>Resorcinol-formaldehyde based polymer hydrogels with various graphene oxide (GO) content were synthesized using Na<sub>2</sub>CO<sub>3</sub> as catalyst at pH=6 conditions. After supercritical drying they were converted to carbon aerogels in nitrogen atmosphere. The heat treatment not only pyrolysed the polymer gel, but also reduced GO. The GO added varied within 0-14% related to the mass of resorcinol which resulted in the reinforcement of the polymer matrix. The texture of the polymer and the carbon aerogels were characterized and compared in the nanoscale using SEM and TEM imaging, X-ray diffraction (XRD) and low temperature nitrogen adsorption measurements. The transition from polymer to carbon state was studied by thermogravimetry. In agreement with reference works in the GO range studied the morphology was not affected by the GO content either in the polymer or in the carbon form. The direct current (DC) conductivity however linearly increased with the added GO and already 10 % doubled the conductivity of the plain carbon aerogel.</p> ER -