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Hydrogels hydroxyethyl cellulose

Hydroxyethyl cellulose hydrogels may also be used in various delivery systems. ... [Pg.333]

Durand-Cavagna G, Delort P, Duprat P, et al. Corneal toxicity studies in rabbits and dogs with hydroxyethyl cellulose and benzalkonium chloride. Fundam Appl Toxicol 1989 13 500-508. Li J, Xu Z. Physical characterization of a chitosan-based hydrogel delivery system. ] Pharm Sci 2002 91(7) 1669-1677. [Pg.333]

The most often used viscosity enhancers in hydrogels are carbomer salts and the cellulose derivates hypromellose and hydroxyethyl cellulose (see Sects. 12.5.3 and 23.7.3). [Pg.257]

Gorga RE, Cohen RE (2004) Toughness enhancements in poly (methyl methacrylate) by addition of oriented multiwall carbon nanotube. J Polym Sci B Polym Phys 42(14) 2690-2702 Gorgieva S, Kokol V (2011) Synthesis and application of new temperature responsive hydrogels based on carboxymethyl and hydroxyethyl cellulose derivatives for the functional finishing of cotton knitwear. Carbohydr Polym 85 664-673... [Pg.290]

We present herein a review of recent studies describing the preparation and properties of dispersed-phase solutions and hydrogels made from hydrophobically modified hydroxyethyl cellulose (HMHEC). [Pg.260]

Fig. 18 a, b. Typical permeabilities of various hydrogels to water and various solutes (a) Water permeability at pressures less than 7 x 107 dyne/cm2 531 (1) = polyelectrolyte complex of poly-(sodium styrenesulfonate) (NaSS)-poly(4-vinylbenzyltrimethylammonium chloride) (PVBMA), (2) = crosslinked hydrogel of poly(2-hydroxyethyl methacrylate), (3) - cellulose (b) Dialytic permeability of a polyelectrolyte complex composed of NaSS-PVBMA to solutes with various molecular weights541 (1) Water, (2) neutral polyelectrolyte complex (water content = 70%), (3) anionic polyelectrolyte complex (water content = 61%), (4) cellophane and cuprophane (water content = 57%)... [Pg.39]

Polymeric thickeners Gums Acacia Alginates Carageenan Chitosan Collagen Tragacanth Xantham Celluloses Sodium carboxymethyl Hydroxyethyl Hydroxypropyl Hyd roxypro pyl m ethyl Acrylic acids Carbomers Polycarbophil Colloidal solids Silica Clays Microcrystalline cellulose Hydrogels Polyvinyl alcohol Polyvinylpyrrolidone Thermoreversible polymers Poloxamers... [Pg.545]

Two approaches are discussed for the preparation of enzymatically controlled drug delivery systems a calcium-responsive biodegradable drug delivery system based on a mixture of starch with HPMC (hydroxypropyl methyl cellulose ether) (biodegradable) and the starch hydrolytic enzyme, alpha-amylase, in its non-active form and a glucose responsive insulin delivery system based on the hydrogel poly(2-hydroxyethyl methacrylate-co-N,N-dimethylaminoethyl methacrylate), with entrapped glucose oxidase, catalase and insulin. In both systems, the sensitivity... [Pg.64]

See other pages where Hydrogels hydroxyethyl cellulose is mentioned: [Pg.220]    [Pg.172]    [Pg.35]    [Pg.115]    [Pg.105]    [Pg.218]    [Pg.8407]    [Pg.248]    [Pg.84]    [Pg.531]    [Pg.293]    [Pg.103]    [Pg.40]    [Pg.154]   
See also in sourсe #XX -- [ Pg.333 ]



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