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Gel characterization

Fu, G. Nazer, L. F. Bain, A. D. 1991. Aging processes of aluminum sol-gels Characterization of new polyoxocations by aluminum-27 NMR spectroscopy. Chem. Mater. 3 602-610. [Pg.128]

D = D° exp(-ac ), where D is the diffusion, D represents the zero-concentration limit, c is the concentration, a and v are parameters, fits the data from a wide variety of probes and matrix polymers ( ). Several theoretical justifications for this behavior have been presented (97-1011. but it is not possible to tell yet which, if any, is uniquely correct. The treatments range from simple physical considerations (98) to treatments of hydrodynsumical interaction of probe and matrix (97,991. Other more complex and general treatments (1001 do not explicitly arrive at the stretched exponential form, but do closely fit the available data. Much more work needs to be done on probe diffusion in such transient networks. Beyond enhancing the arsenal of gel characterization, the problem is quite fundamental to a number of other important processes. [Pg.16]

Structure of DN Gels Characterized by Small-Angle Neutral Scattering... [Pg.205]

If the term sol-gel is used in a strict manner - that is, it must include processing in which a sol undergoes a transition to a gel characterized by an infinite three-dimensional network structure spreading uniformly throughout the liquid medium - only two sol-gel processing techniques in which a true gel is prepared, are recognized ... [Pg.260]

Fu G., Nazar L.F., Bain A.D. Aging processes of alumina sol-gel characterization of new aluminum polyoxycations by Al NMR spectroscopy. Chem. Mater. 1991 3 602-610 Furusaki T., Kodaira K. Preparation and properties of IniOs thin films by the sol-gel method. In High Performance Ceramic Film and Coatings. Elsevier Sdaice Pub, 1991, pp. 241-247 Furusaki T., Takahashi J., Takaha H., Kodaira K. Formation process ofSn02 thin films by sol-gel method. J. Ceram. Soc. Jpn. 1993 101 451 55 Furusaki T., Takahashi J., Kodaira K. Preparation ofTTO thin films by sol-gel method. J. CCTam. Soc. Jpn. 1994 102 200-205... [Pg.121]

Chapter 3 Section 2 Structure of Gels, Characterization Techniques... [Pg.174]

See other pages where Gel characterization is mentioned: [Pg.261]    [Pg.162]    [Pg.180]    [Pg.81]    [Pg.180]    [Pg.1439]    [Pg.188]    [Pg.246]    [Pg.514]    [Pg.54]    [Pg.530]    [Pg.241]    [Pg.113]    [Pg.21]    [Pg.172]    [Pg.1292]    [Pg.148]    [Pg.178]    [Pg.1367]    [Pg.70]    [Pg.167]    [Pg.780]    [Pg.119]    [Pg.146]    [Pg.172]   
See also in sourсe #XX -- [ Pg.162 ]



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Section 2 Structure of Gels, Characterization Techniques

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Structure of gels and their characterization

The Sol-Gel Handbook: Synthesis, Characterization, and Applications, First Edition

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