Idioma:

Synthesis and structure-conductivity relationship of polystyrene-block-poly(vinyl benzyl trimethylammonium) for alkaline anion exchange membrane fuel cells

Tsai, Tsung-Han ; Maes, Ashley M. ; Vandiver, Melissa A. ; Versek, Craig ; Seifert, Sönke ; Tuominen, Mark ; Liberatore, Matthew W. ; Herring, Andrew M. ; Coughlin, E. Bryan

Journal of polymer science. Part B, Polymer physics, 2013-12, Vol.51 (24), p.1751-1760 [Revista revisada por pares]

Hoboken, NJ: Blackwell Publishing Ltd

Texto completo disponible

Citas Citado por

Acciones

Título:
Synthesis and structure-conductivity relationship of polystyrene-block-poly(vinyl benzyl trimethylammonium) for alkaline anion exchange membrane fuel cells
Autor: Tsai, Tsung-Han ; Maes, Ashley M. ; Vandiver, Melissa A. ; Versek, Craig ; Seifert, Sönke ; Tuominen, Mark ; Liberatore, Matthew W. ; Herring, Andrew M. ; Coughlin, E. Bryan
Materias: amphiphilic block copolymers ; anion exchange membrane fuel cell ; Anion exchanging ; Applied sciences ; atom transfer radical polymerization (ATRP) ; Block copolymers ; conductivity relationship ; Exact sciences and technology ; Exchange resins and membranes ; Forms of application and semi-finished materials ; Grain boundaries ; Humidity ; Hydroxides ; Membranes ; Microstructure ; Morphology ; Organic polymers ; phase separation ; Physicochemistry of polymers ; poly(vinyl benzyl trimethylammonium) ; Polymer industry, paints, wood ; polymeric electrolyte membranes ; Polymers with particular properties ; polystyrene ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; structure ; Technology of polymers
Es parte de: Journal of polymer science. Part B, Polymer physics, 2013-12, Vol.51 (24), p.1751-1760
Notas: istex:93C0681203807BA59626B8B7B041245342765267
ArticleID:POLB23170
ark:/67375/WNG-X9F0707N-W
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descripción: Block copolymers of polystyrene‐b‐poly(vinyl benzyl trimethylammonium tetrafluoroborate) (PS‐b‐[PVBTMA][BF4]) were synthesized by sequential monomer addition using atom transfer radical polymerization. Membranes of the block copolymers were prepared by drop casting from dimethylformamide. Initial evaluation of the microphase separation in these PS‐b‐[PVBTMA][BF4] materials via SAXS revealed the formation of spherical, cylindrical, and lamellar morphologies. Block copolymers of polystyrene‐b‐poly(vinyl benzyl trimethylammonium hydroxide) (PS‐b‐[PVBTMA][OH]) were prepared as polymeric alkaline anion exchange membranes materials by ion exchange from PS‐b‐[PVBTMA][BF4] with hydroxide in order to investigate the relationship between morphology and ionic conductivity. Studies of humidity [relative humidity (RH)]‐dependent conductivity at 80 °C showed that the conductivity increases with increasing humidity. Moreover, the investigation of the temperature‐dependent conductivity at RH = 50, 70, and 90% showed a significant effect of grain boundaries in the membranes against the formation of continuous conductive channels, which is an important requirement for achieving high ion conductivity. © 2012 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1751–1760, 2013 Fundamental investigations about the relationship between morphology and conductivity in alkaline anion exchange membranes made from well‐defined block copolymers are sparse. The synthesis, morphology, and conductivity of polystyrene‐b‐poly(vinyl benzyl trimethylammonium tetrafluoroborate) (PS‐b‐[PVBTMA][OH]) are investigated. The block copolymers self‐assemble into spherical, cylindrical, and lamellar microstructures. The nonlinearly increasing conductivity at high humidity with increasing ion exchange capacity results from the inherent nature of the microstructures. An inverse relationship between conductivity and temperature is attributed to the effect of swelling, or shrinkage, of the polycation segment and to the existence of grain boundaries.
Editor: Hoboken, NJ: Blackwell Publishing Ltd
Idioma: Inglés

Enlaces

View record in Pascal Francis

Volver a la lista de resultados

Anterior Resultado 4 Siguiente Ir a la siguiente página

Realización: Logos de Redes Sociales:

Synthesis and structure-conductivity relationship of polystyrene-block-poly(vinyl benzyl trimethylammonium) for alkaline anion exchange membrane fuel cells

Tsai, Tsung-Han ; Maes, Ashley M. ; Vandiver, Melissa A. ; Versek, Craig ; Seifert, Sönke ; Tuominen, Mark ; Liberatore, Matthew W. ; Herring, Andrew M. ; Coughlin, E. Bryan

Hoboken, NJ: Blackwell Publishing Ltd

Buscando en bases de datos remotas, por favor espere