Hydrogels using

Hydrogels used for contact lens appHcations can be classified based on the chemical stmcture of hydrophilic monomers and on the water content of the hydrogel lens. These classifications are not unique because the design of hydrogels is based on the performance desired in most cases, more than one component is used for the same or complementary purpose. In fact, some hydrophilic monomers are used in both high water and low water lenses. 

Hem DL, Hubbell JA (1998) Incorporation of adhesion peptides into nonadhesive hydrogels useful for tissue resurfacing. J Biomed Mater Res 39 266-276... 

Synthesis and Properties of Hydrogels Used for Drug Delivery Stevin H. Gehrke... 

SH Gehrke, NR Vaid, JF McBride. Protein sorption and recovery by hydrogels using principles of two aqueous phase protein extraction. Biotech Bioeng 58 416-427, 1998. 

A mueoadhesive hydrogel used as a drug delivery system should... 

Title Methods for the Formation of Hydrogels Using Thiosulfonate Compositions and Uses Thereof... 

Our results on the synthesis of zeolite Y under comparable conditions indicate that the formation of this zeolite depends strongly on the structure of polymerized silica which reacts with sodium aluminate. Zeolite Y was formed in experiment SKI but not in SKIII. The hydrogel used in experi-... 

FIGURE 26.8 Ocular iontophoretic system using drug-loaded disposable hydrogels. Used by Eljarrat-Binstock et al. [57,58] and Frucht-Pery et al. [59]. (Adapted from Eljarrat-Binstock, E. et al., Invest. Ophthalmol. Vis. Sci., 45, 2543, 2004. With permission.)... 

Russell RJ, Axel AC, Shields KL, Pishko MV. Mass transfer in rapidly photopolymerized poly(ethylene glycol) hydrogels used for chemical sensing. Polymer 2001, 42, 4893 1901. 

Zhang, H. and W. Davison. 1999. Diffusional characteristics of hydrogels used in DGT and DET techniques. Anal. Chim. Acta 398 329-340. 

Transparent hydrogels useful for adhesion inhibitors, tissue adhesives, wound dressings, hemostatics and embolisation materials are obtained from dextran methacrylates via polymerisation with N-isopropylacrylamide in DMSO in the presence of azobisisobutyronitrile [176]. A broad variety of new hydrogels with different sensitivities and tunable degradation behaviour is accessible by grafting L-lactide onto 2-hydroxyethyl methacrylate (HEMA) and binding this polymerisable group on dextran via activation with N,N -carbonyldiimidazole (CDI, Sect. 4.2.2) [177]. 

It has been found that the polymer surface having appropriately grafted nonionic, water-soluble polymer chains minimizes protein adsorption and cell adhesion. It should be noted that such minimum protein adsorption has been well known for a long time for hydrogels used for protein analysis such as polyacrylamine (PAAm) gel for electrophoresis, sephadex for protein gel filtration, and soft agar for cell culture. It is likely that the surface structure of these hydrogels resembles that of the grafted surface described above. 

Preparation of a Superabsorbent Hydrogel Using Internal Crosslinkers... 

Title Thermosensitive Poly(Organophosphazenes), Preparation Method Thereof and Injectable Thermosensitive Polyphosphazene Hydrogels Using the Same... 

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