Polymer-inorganic hybrid membranes

Z. He, I. Pinnau, A. Morisato, Novel nano structured polymer-inorganic hybrid membranes for vapor-gas separation, in Advanced Materials for Membrane Separation, I. Pinnau, B. D. Freeman (Eds.), ACS Symposium Series 876, American Chemical Society, Washington, DC, 2004. 

Recent progress in polymer-inorganic hybrid membranes... 

Depending on the nature of the particles embedded in the polymeric matrix, polymer-inorganic hybrid membranes can be divided into two nonexclusive groups mixed matrix membranes (MMMs) and nanocomposite membranes (NCMs). 

The preparation of defect-free zeolite layers on a large scale is extremely difficult and it seems doubtful that this will ever be achieved at a competitive price. However, the combination of the superior gas selectivities of molecular sieves with the processibility of polymeric membranes has attracted many researchers. The hybrid membranes consisting of inorganic molecular sieves and polymers are often referred to as mixed-matrix membranes. The term mixed-matrix membrane has been introduced by Kulprathipanja et al. [309], who performed pioneering work in the field of polymer/zeolite hybrid membranes. Kulprathipanja showed that the CO2/H2 selectivity of cellulose acetate could be reversed by addition of silicalite. The siHcaHte-CA membrane had a CO2/H2 selectivity of 5.1, whereas the pure CA membrane exhibited a selectivity of 0.77. 

Advances in polymer-inorganic hybrids as membrane materials... 

Liang, W.-J. Wu, C.-P. Hsu, C.-Y. Kuo, P.-L., S)uithesis, Characterization, and Proton-Conducting Properties of Organic-Inorganic Hybrid Membranes Based on Polysiloxane Zwitterionomer. J. Polym. Set, Part A Polym. Chem. 2006,44, 3444-3453. 

Wu, C., Wu, Y., Xu, T., Fu, Y. (2008) Novel anion-exchange organic-inorganic hybrid membranes prepared through sol-gel reaction and UV/thermal curing. Journal of Applied Polymer Science, 107, 1865-1871. 

Li, S., Zhou, Z., Liu, M. and Li, W. 2005. Heterocycle grafted monomers and related polymers and hybrid inorganic-organic polymer membranes. WO Patent 05072413. 

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