Water dynamics in rigid ionomer networks
作者： N. C. Osti , T. N. Etampawala , U. M. Shrestha , D. Aryal , M. Tyagi
DOI: 10.1063/1.4971209
关键词: Ionic bonding 、 Solvation 、 Chemical physics 、 Membrane 、 Phenylene 、 Chemistry 、 Polymer chemistry 、 Ionomer 、 Molecule 、 Neutron scattering 、 Polymer
摘要: The dynamics of water within ionic polymer networks formed by sulfonated poly(phenylene) (SPP), as revealed quasi-elastic neutron scattering (QENS), is presented. These polymers are distinguished from other macromolecules their rigidity and therefore in network structure. QENS measurements a function temperature the fraction groups humidity were varied have shown that molecules immobile while absorbed remain dynamic. occupy multiple sites, either bound or loosely constrained, bounce between two. With increasing hydration levels, system becomes more Water mobile even at subzero temperatures, illustrating applicability SPP membrane for selective transport over broad range.
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V. SKIRDA, A. FILIPPOV, A. SAGIDULLIN, A. MUTINA, R. ARCHIPOV, G. PIMENOV, RESTRICTED DIFFUSION AND MOLECULAR EXCHANGE PROCESSES IN POROUS MEDIA AS STUDIED BY PULSED FIELD GRADIENT NMR Springer, Dordrecht. pp. 255- 278 ,(2006) , 10.1007/1-4020-4382-1_12
Longhe Zhang, Nicole R. Brostowitz, Kevin A. Cavicchi, R. A. Weiss, Perspective: Ionomer Research and Applications Macromolecular Reaction Engineering. ,vol. 8, pp. 81- 99 ,(2014) , 10.1002/MREN.201300181
R. Devanathan, A. Venkatnathan, M. Dupuis, Atomistic Simulation of Nafion Membrane. 2. Dynamics of Water Molecules and Hydronium Ions Journal of Physical Chemistry B. ,vol. 111, pp. 13006- 13013 ,(2007) , 10.1021/JP0761057
Z. Chowdhuri, R.B. Gregory, A.P. Sokolov, J.H. Roh, J.E. Curtis, S. Azzam, V.N. Novikov, I. Peral, Influence of Hydration on the Dynamics of Lysozyme Biophysical Journal. ,vol. 91, pp. 2573- 2588 ,(2006) , 10.1529/BIOPHYSJ.106.082214
Lilin He, Cy H. Fujimoto, Chris J. Cornelius, Dvora Perahia, From solutions to membranes: Structure studies of sulfonated polyphenylene ionomers Macromolecules. ,vol. 42, pp. 7084- 7090 ,(2009) , 10.1021/MA900314G
J. Teixeira, M.-C. Bellissent-Funel, S. H. Chen, A. J. Dianoux, Experimental determination of the nature of diffusive motions of water molecules at low temperatures. Physical Review A. ,vol. 31, pp. 1913- 1917 ,(1985) , 10.1103/PHYSREVA.31.1913
Ferdinand Volino, Jean-Christophe Perrin, Sandrine Lyonnard, Gaussian model for localized translational motion: application to incoherent neutron scattering. Journal of Physical Chemistry B. ,vol. 110, pp. 11217- 11223 ,(2006) , 10.1021/JP061103S
Adam M. Pivovar, Bryan S. Pivovar, Dynamic behavior of water within a polymer electrolyte fuel cell membrane at low hydration levels. Journal of Physical Chemistry B. ,vol. 109, pp. 785- 793 ,(2005) , 10.1021/JP046029X
G. Gebel, Structural evolution of water swollen perfluorosulfonated ionomers from dry membrane to solution Polymer. ,vol. 41, pp. 5829- 5838 ,(2000) , 10.1016/S0032-3861(99)00770-3
Jean-Christophe Perrin, Sandrine Lyonnard, Ferdinand Volino, Quasielastic Neutron Scattering Study of Water Dynamics in Hydrated Nafion Membranes Journal of Physical Chemistry C. ,vol. 111, pp. 3393- 3404 ,(2007) , 10.1021/JP065039Q