C. González-Guisasola¹, O. Gil-Castell^1,2, R. Teruel-Juanes¹, A. Ribes-Greus^1,*

Journal of Renewable Materials, Vol.8, No.9, pp. 1171-1180, 2020, DOI:10.32604/jrm.2020.04399 - 03 August 2020

Abstract Composite polymer electrolyte membranes were prepared with poly (vinyl alcohol) (PVA). Two different molecular weight (M_w), 67·10³ and 130·10³ g·mol⁻¹ were selected, cross-linked with sulfosuccinic acid (SSA) and doped graphene oxide (GO). The effects on the membranes obtained from these polymers were characterized in order to evaluate the fuel cell performance. Electron microscopy showed a proper nanoparticle distribution in the polymer matrix. The chemical structure was evaluated by Fourier transform infrared spectroscopy. The absence of a crystalline structure and the enhancement on the thermal stability with the addition of 1% of GO was demonstrated by thermal characterization. More >

Raquel Fernández^*, Connie Ocando, Susana C. M. Fernandes, Arantxa Eceiza, Agnieszka Tercjak

Journal of Renewable Materials, Vol.3, No.1, pp. 49-55, 2015, DOI:10.7569/JRM.2014.634134

Abstract The main goal of this work was the development of photoactive multilayer fi lms. Taking into account that chitosan is a biodegradable, biocompatible, nontoxic, and antibacterial biopolymer, the fabrication of chitosanbased multilayer fi lms can be an interesting pathway to obtain biopolymer-based fi lms in which properties can be combined with a light-responsive material, such as an azobenzene-containing polymer. In particular, the layer-by-layer technique was used for the fabrication of the optically active fi lms consisting of alternating layers of chitosan and an azopolymer. The infl uence of the pH and the number of bilayers More >