Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/19316
Título: | Nafion (R) and nanocellulose: A partnership for greener polymer electrolyte membranes |
Autor: | Gadim, Tiago D. O. Vilela, Carla Loureiro, Francisco J. A. Silvestre, Armando J. D. Freire, Carmen S. R. Figueiredo, Filipe M. L. |
Palavras-chave: | BACTERIAL CELLULOSE MEMBRANES FUEL-CELL APPLICATIONS PROTONIC CONDUCTIVITY COMPOSITE MEMBRANES THERMAL-STABILITY BIOPOLYMER BEHAVIOR |
Data: | 2016 |
Editora: | ELSEVIER SCIENCE BV |
Resumo: | This paper reports the characterization of a Nafion (R)/bacterial cellulose (BC) nanocomposite prepared by impregnation of a nanofibrillar BC membrane with Nafion (R). Such nanocomposite membrane is obtained crack-free and with thickness close to 100 mu m. Dynamic mechanical analysis reveals a storage modulus more than 1 order of magnitude higher than for pure Nafion (R), with BC effectively limiting the viscous flow of the nanocomposite up to 125 degrees C. The in-plane protonic conductivity is 0.14S cm(-1) at 94 degrees C and 98% relative humidity, which is lower than for pure Nafion (R), but in line with the lower concentration of acid groups of the composite (0.60 vs. 0.92 mmol [H+] g(-1) for Nafion (R)). The application of the Nafion (R)/BC membrane in an air/hydrogen fuel cell is demonstrated. (C) 2016 Elsevier B.V. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19316 |
DOI: | 10.1016/j.indcrop.2016.01.028 |
ISSN: | 0926-6690 |
Versão do Editor: | 10.1016/j.indcrop.2016.01.028 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Nafion (R) and nanocellulose A partnership for greener polymer electrolyte membranes_10.1016j.indcrop.2016.01.028.pdf | 907.75 kB | Adobe PDF |
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