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Clay polymer nanocomposites membranes

Thermoset polymers like polyimide, crosslinked sulfonated poly(ether ether ketone) and polyacrylate can be used for membrane applications. The presence of nanoparticle nucleates the nanopore formation with the assistance of an agent. The nanopore is responsible for the solvent separation and transportation. Membranes such as solvent filters, filters for bacteria and virus, and membrane for gas separation can be developed using clay-polymer nanocomposites [118-119]. [Pg.340]

A new polymer-inorganic nanocomposite SPEEK membrane filled with Cloisite 15A clay by introducing 2,4,6-triaminopyrimidine (TAP) as the compatibilizer for DMFC applications has been successfully prepared. The organoclay Cloisite is a material prepared from MMT and the cation ditallow. Tallow is a mixture of octa-decyl, hexadecyl, and tetradecyl, wherein octadecyl is the major component (>60%). Cloisite is a very promising additive in nanocomposite membranes, since it is already being organically modified from the natural MMT, which is expected to enhance the compatibility with organic polymers (Cervantes-Uc et al. 2007). [Pg.424]

Computations have been carried out to better understand the structures and properties of these types of nanocomposites. One subject of particular interest is the observed enhanced gas transport performance of PDMS nanocomposite membranes containing layered silicates, which is not expected based on studies of magnetically alligned particles disuc-ssed in the next section. Clays have also been used to improve the properties of silsesquioxane polymers. ... [Pg.228]

Ghosh S, Sannigrahi A, Maity S et al (2011) Role of clays structures on the polybenzimidazole nanocomposites potential membranes for the use in polymer electrolyte membrane fuel cell. J Phys ChemC 115 11474-11483... [Pg.214]

Loyens et al. [25] used NaClO containing poly(ethylene oxide) PEO clay nanocomposite for polymer electrolyte membrane. Incorporating NaClO containing PEO/Cloisite 30B nanocomposites displayed improvement of mechanical stiffness. At lower salt content it revealed an increased conductivity attributed to exfoliated structure. That effect was minimized at higher NaClO content due to interaction between Na and silicate layers. At temperatures above T the nanocomposites displayed slightly lower conductivities compared with corresponding PEO/NaClO complex due to presence of clay platelets hindering ion transport. [Pg.249]

Loyens, W., F. H. J. Maurer, and P. Jannasch, Melt-compounded salt-containing poly(ethylene oxide)/clay nanocomposites for polymer electrolyte membrane . Polymer, 46 (2005) 7334-7345. [Pg.251]

Alonso, R.H., Estevez, L., Lian, H., Kelarakis, A., Giaimehs, E.P., Nafion-clay nanocomposite membranes Morphology and properties. Polymer, 2009, 50, 2402-2410. [Pg.441]

Yeh J-M, Yu M-Y, Liou S-J, Debydration of water-alcohol mixtures by vapor permeation through PVA/clay nanocomposite membrane , J. Appl. Polym. Sci., 2003 89 3632-8. [Pg.296]

Song MK, Park SB, Kim YT, Rhee HW, Kim J (2003) Nanocomposite polymer membrane based on cation exchange polymer and nano-dispersed clay sheets. Mol Cryst Liq Crys 407 15-23... [Pg.208]

Nicotera et al. investigated the behavior of water confined in recast NAFION and in NAFION-clay hybrids membranes using PFGSE NMR and spin—lattice relaxation time Tj, and concluded that the transport mechanism is influenced from the dimensions of the dispersed platelets and mainly from the type of nanocomposites formed upon mixing the clay particles with the polymer matrix. Compared to pure NAFION, the water uptake and the water diffusion of the hybrid membranes are increased, with the exception of the Kunipia-NAFION composite [83]. [Pg.175]

Usuki A, Hasegawa N and Kato M (2005) Polymer-clay nanocomposites, in Advances in Polymer Science Inorganic Polymeric Nanocomposites and Membranes, Springer, Berlin, Vol. 179, pp. 135-195. [Pg.386]

Prasanth, R., Shubha, N., Hng, H.H., Srinivasan, M., Effect of nano-clay on ionic conductivity and electrochemical properties of poly(vinylidene fluoride) based nanocomposite porous polymer membranes and their application as polymer electrolyte in lithium ion batteries, Eur. Polym. J., 2013,49, 307-318. [Pg.445]


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See also in sourсe #XX -- [ Pg.338 ]




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