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Polyionic hydrogel

Polyionic hydrogel ( complex coacervate or polyion complex hydrogel) by mixing polyelectrolytes with opposite charge, for example, alginic acid and polylysine... [Pg.83]

Dumitriu S, Chomet E (2000) Polyionic hydrogels as support for enzyme immobilization. Chitin Enzymol 2 527—542... [Pg.22]

Dumitriu, S., Magny, P., Montane, D., et al. Polyionic hydrogels obtained by complexation between Xanthan and Chitosan their properties as supports for enzyme immobilization. J. Bioact. Compat. Polym. 9, 184-209 (1994). doi 10.1177/088391159400900205... [Pg.85]

Dumitriu, S., Kahane, 1., Guttmann, H. Supported polyionic hydrogels containing biologically active material. US Patent 5,648,252, 1997... [Pg.186]

Polymer complexes associated with two or more complementary polymers are widely used in potential applications in the form of particles, hydrogels, films, and membranes. In particular, a polyion complex (PIC) can be easily formed when oppositely charged polyelectrolytes are mixed in aqueous solution and interact via... [Pg.41]

Immobilization of nanoparticles and enzymes onto electrode surfaces using various entrapment chemistries, that is, sol-gels, layered polyions, and hydrogels, has allowed for greater functionality and improved stability. Crumbliss and coworkers demonstrated the direct electron transfer between the redox center of HRP by evaporation... [Pg.285]

Stefano Farris, Karen M, Schaich, LinShu Liu, and LP, Yam KL. Development of polyion-complex hydrogels as an alternative approach for the production of bio-based polymers for food packaging applications A review. Trends in Food Science and Technology. 2009 20 316-332. [Pg.1409]

Complex coacervate gels can be formed by mixing a polyanion solution with a polycation solution (Priftis and Tirrell, 2012). The fundamental principle (Fig. 10.11) is that polymers with opposite charged stick together and form soluble or insoluble complexes depending on the concentration and pH of the respective solutions. For example, proteins below their isoelectric point are positively charged and likely to associate with anionic hydrocolloids and form polyion complex hydrogels (complex coacervate). [Pg.215]

Polyionic complexes of chitosan and polyacrylic acid were prepared in a wide range of copolymer composition and with two kinds of drugs. Release of amoxicillin trihydrate and sodium amoxicillin from these complexes were studied. The swelling behaviour of and solute transport in swellable hydrogels were investigated. 23 refs. [Pg.68]

Fig. 19 Comparison of the sweUing degree of hydrogels based on starch and carageenan. Tablets were composed of either a freeze-dried polyionic complex (IPEC diamonds) or a granular mixture of dried polymers (phys. mix. squares). The swelling degree was determined by comparison of the mass of swollen gel to dry gel. Reprinted from Cukiermtm et al. [159]. Copyright 2009 Elsevier... Fig. 19 Comparison of the sweUing degree of hydrogels based on starch and carageenan. Tablets were composed of either a freeze-dried polyionic complex (IPEC diamonds) or a granular mixture of dried polymers (phys. mix. squares). The swelling degree was determined by comparison of the mass of swollen gel to dry gel. Reprinted from Cukiermtm et al. [159]. Copyright 2009 Elsevier...
Dumitriu, S., Chornet, E., dal, P. Polyionic insoluble hydrogels comprising xanthan and chitosan. US Patent 5,620,706,1997... [Pg.184]

See other pages where Polyionic hydrogel is mentioned: [Pg.288]    [Pg.108]    [Pg.204]    [Pg.167]    [Pg.184]    [Pg.288]    [Pg.108]    [Pg.204]    [Pg.167]    [Pg.184]    [Pg.162]    [Pg.72]    [Pg.188]    [Pg.217]    [Pg.261]    [Pg.286]    [Pg.1334]    [Pg.252]    [Pg.531]    [Pg.162]    [Pg.450]    [Pg.311]    [Pg.65]    [Pg.47]    [Pg.8]    [Pg.482]    [Pg.357]    [Pg.515]    [Pg.455]    [Pg.1737]    [Pg.176]   
See also in sourсe #XX -- [ Pg.83 ]



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