Polyacrylonitrile membranes

The chitosan-heparin polyelectrolyte complex was covalently immobilized onto the surface of polyacrylonitrile membrane. The immobilization caused the water contact angle to decrease, thereby indicating an increase in hy-... 

Carter, R., Wycisk, R., Yoo, H. and Pintauro, P. N. 2002. Blended polyphosphazene/polyacrylonitrile membranes for direct methanol fuel cells. Electrochemical and Solid-State Letters 5 A195-A197. 

Wang HY, Kobayashi T, Fujii N. Surface molecular imprinting on photosensitive dithiocar-bamoyl polyacrylonitrile membranes using photograft polymerization. J Chem Technol Biotechnol 1997 70 355-362. 

Kim JH, Ha SY, Nam SY et al (2001) Selective permeation of C02 through pore-filled polyacrylonitrile membrane with poly(ethylene glycol). J Membr Sci 186(1) 97-107... 

Immobilized HRP onto a polyacrylonitrile membrane A membrane with a specific HRP activity of 1.15 U/g of support dry wt was obtained. After an operation period of 35 h, the enzymatic membrane had a specific productivity of 59.5 pmol of H202 reduced/Qi-Uimmob hrp) [42]... 

Leiriao PRS, Fonseca LJP, Taipa MA et al (2003) Horseradish peroxidase immobilized through its carboxylic groups onto a polyacrylonitrile membrane Comparison of enzyme performances with inorganic beaded supports. Appl Biochem Biotechnol 110 1-10... 

Committee on Safety of Medicines. Anaphylactoid reactions to high-flux polyacrylonitrile membranes in combination with ACE inhibitors. Curr Probl 1992 33. 

Non-IgE-mediated anaphylactic reactions to polyacrylonitrile membranes have been reported (2,3). The effects are enhacing in those using ACE inhibitors (4,5), perhaps because of an effect of bradykinin (6), which is released by the membranes (2,8,9) and whose metabolism is inhibited by ACE inhibitors. The effects also occur to a lesser extent in those taking angiotensin receptor antagonists (7) and in those with Cl esterase inhibitor deficiency (10). Treating the membranes with polyethyleneimine prevents bradykinin release (11). 

A.K. Fitzche, A.R. Arevalo, M.D. Moore and C. O Hara, The surface structure and morphology of polyacrylonitrile membranes by atomic force microscopy. J. Membr. Sci., 81 (1993) 109. 

Sztajer and Bryjak [48] have taken an entirely different approach to the purification of the lipase from Pseudomonas fluorescens by investigating the use of ultrafiltration capillary membranes. A two-step procedure involving continuous fractionation of the protein on polyacrylonitrile membrane followed by concentration on polysulfone membranes is suggested for continuous lipase recovery. They observe that the permeate fluxes through both membranes are similar, thereby suggesting that changing the production scales should not be difficult. 

Klein, E. Smith, J.K. Holland, F.F. "Rhone Poulenc Polyacrylonitrile Membrane - Laboratory Evaluation of Permeability, Physical and Mechanical Properties." Rept. No. PB 225066/OSET National Technical Information Service Springfield, VA, 1977. 

Industrial applications of zeolite membranes can be considered only for separations where they offer some unique advantage in terms of flux, selectivity, or thermal and chemical stability. The very high fluxes obtained with LTA membranes (typically 100 times higher than those obtained with a polyacrylonitrile membrane at the same FLO/alcohol selectivity) explain the rapid expansion of this type of application at the end of the 90s [8J. 

T. Jimbo, M. Higa, N. Minoura and A. Tanioka, Surface characterization of polyacrylonitrile) membranes graft-polymerized with ionic monomers as revealed by potential, Macromolecules, 1998, 31, 1277-1284 C. Molina, L. Victoria, A. Arenas and J. A. Ibanez, Streaming potential and surface charge density of microporous membranes with pore diameter in the range of thickness, J. Membr. Sci., 1999,163,239-255. 

Liu, W. and S. Adanur, Properties of electrospnn polyacrylonitrile membranes and chemically-activated carbon nanofibers. Text. Res. J. 2010,80(2), 124-134. 

Hicke H, Bohme P, Becker M et al (1996) Immobilization of enzymes onto modified polyacrylonitrile membranes application of the acryazide method. J Appl Polym Sci 60 (8) 1147-1161... 

Bryjak, M., Hodge, H. and Dach, B. 1998. Modification of porous polyacrylonitrile membranes. An cjv 321212Li S21f 260 25-29. 

Phenol Polyamide and polyacrylonitrile membrane Trichosporon cutaneum R57 Godjevargova etal., 2006... 

Figure VI - 22. Distillation (vapour-liquid equilibrium) and perv xnation characteristics for an ethanol-water mixture at 20 C. Pervaporation was carried out using a polyacrylonitrile membrane [38].

Time-course Intermediate Susceptibility factors Genetic (blacks dipeptidyl peptidase IV deficiency) sex (female) exogenous factors (drugs— NSAIDs, vaccines, immunosuppressants surgery—dental and maxillofacial procedures devices—polyacrylonitrile membranes in hemodialysis) diseases... 

Opatmy Jr, K, Krouzecky, A., Wiith, J., Vit, L., Eiselt, J. The effects of a polyacrylonitrile membrane and a membrane made of regenerated cellulose on the plasma concentrations of erythropoietin during hemodialysis. Artif. Organs 22, 816-820 (1998)... 

Cho et al. [34] made polyacrylonitrile membranes by electrospinning nanofibers. Membranes ranging from 25 to 35 gm thick were made. The membranes had very high ionic permeabiHty as evidenced by MacMuUin numbers (see Section 20.7) ranging from 3.7 to 6.4 versus 12 for a conventional microporous polyolefin membrane. The dry membranes showed no shrinkage at 200 °C. However, when placed in coin cells the membranes exhibited extensive shrinkage at 150 °C. 

Lavaud, S., Canivet, E., WuiUai, A., Maheut, H., Randoux, C., Bormet, J.-M., Renaux, J.-L., and Chanard, J. (2003). Optimal anticoagulation strategy in haemodialysis with heparin-coated polyacrylonitrile membrane. Nephrol. Dial. Trasplant. 18, 2097. 

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