Colloidal network

Non-fluid colloidal network or polymer network that is expanded throughout its whole... 

Hydrogel in which the network component is a colloidal network. 

Note 2 A hydrogel in which the network component is a colloidal network may be referred to as an aquagel. 

Awad, T.S., Rogers, M.A., Marangoni, A.G. 2004. Scaling behavior of the elastic modulus in colloidal networks of fat crystals. J. Phys. Chem.B. 108, 171-179. 

Also briefly mentioned earlier is the fact that the physical properties of the interface of nanoparticles in solution/solvent or electrolytes may lead not only to colloidal behavior but also to particle-particle interaction or particle-solvent interaction. Self-supporting colloid network structures allow for the coexistence of high conductivity with mechanical stability, enabling colloidal gels to be used as electrolytes [76-78]. 

Kane et al. (2003) found that gel formation appeared for very low amounts of crystals (around 1-2%) when the oil was cooled under quiescent conditions. In such conditions, a colloidal network, which embodies the oil, is formed, and the whole dispersion becomes a gel. As shown in Tablel, the lowest content of the floccules separated from KH150BS was 1.67%, and the content of the floccules exhibited an increase with a decrease in the experimental temperature. This experimental result revealed the morphology of crystals... 

The term nanogel or microgel usually defines aqueous dispersions of hydrogel particles or colloidal networks formed by physically or chemically cross-linked polymer chains of nano-or microscale size. 

Obviously, the rheological performance of fumed silica in adhesives, resins, and paints is mainly determined by the stability of the colloidal network. This raises the question of which parameters influence the formation and stability of a colloidal silica network. In order to answer this question we have to understand a) the nature of interactions in silica/resin/solvent mixtures in terms of the silica-silica, silica-resin, and silica-solvent interactions, and b) how these interactions influence the rheological behavior of the mixtures. From this information we should be able to develop a comprehensive model that explains the rheological performance of different grades of fumed silica in different resin types. 

In order to develop a comprehensive model for the thickening behavior of different grades of fumed silicas, advanced rheological and spectroscopic experiments as well as quantum chemical calculations have been performed. The results indicate that hmdamentally different mechanisms are responsible for the formation of colloidal networks of hydrophilic and fully silylated silica. 

To achieve the above objectives, it is essential to understand the colloid-chemical properties of the system as well as its flow characteristics under various conditions. Many food products (e.g. yoghurt) can be compared with the microstructure of particulate gels. The structure is formed from a continuous colloidal network, which holds the product together and gives rise to its characteristic properties. A colloidal network can be formed from particles linked together forming strands, enveloping pores and/or... 

Solvent system thickeners - Hydrogenated eastor oil is used as a thixotropic thickener in paints based on nonpolar aliphatie solvents. Hydroxyl groups on the fatty acid chains of the eastor oil triglyeeride structure enable the formation of a colloidal network via hydrogen bonds. Polar attraction among fimctional groups accoimts for the ability of polyamide-alkyd resins to fimction as thixotropic thickeners in nonpolar solvents. 

I 0 Hydrophilic Colloidal Networks (Micro- and Nanogels) in Drug Delivery and Diagnostics... 

WALLS, H.J., RILEY, M.W., FEDKIW, P.S., SPONTAK, R.J., BAKER, G.L. and KHAN, S.A., 2003. Composite electrolytes from self-assembled colloidal networks. Electrochimica Acta, 48(14-16), 2071-2077. 

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