Aggregates light scattering studies

An increase in the degree of sulphonation of a typical azo acid dye structure minimises aggregation, especially if the sulpho groups are widely separated from one another and from the azo group. Light-scattering studies demonstrated freedom from aggregation with the... 

Pouzot, M., Nicolai, T., Visschers, R.W., Weijers, M. (2005). X-ray and light scattering study of the structure of large protein aggregates at neutral pH. Food Hydrocolloids, 19, 231-238. 

None of the detailed mechanisms to be discussed considers the macro-molecular association that may be involved in the action of RNase on high molecular weight polyribonucleotides. Preiss reported from light scattering studies that very large RNA-enzyme aggregates may be formed (393). Their significance for the catalytic mechanism is unknown. 

Hemker DJ, Frank CW (1990) Dynamic light-scattering studies of the fractal aggregation of poly(methacrylic acid) and poly(ethylene glycol). Macromolecules 23(20) 4404-4410... 

Pasternack RF, Schaefer KF, Hambright P (1994) Resonance light-scattering studies of porphyrin diacid aggregates. Inorg Chem 33 2062-2065... 

Static and dynamic light scattering studies by Milhem have shown that G4 PAMAM dendrimers do not exhibit intermolecular aggregation in aqueous solution at concentrations up to 7%w/w at pH 10.5, or even when fully unionized at pH 14. 

Marrack JR, Richards CB. Light scattering studies of the formation of aggregates in mixtures of antigen and antibody. Immunology 1970 20 1019-40. 

Characterizations by means of cryo TEM replica show that there are elementary particles dispersed in all the suspensions. This TEM work with light scattering studies of the overfloating suspensions 1 for the 4 powders show that they all contain aggregates with... 

M22. Mazer, N. A., Schurtenberg, P., Carey, M. C., Preisig, R., Weigand, K., and Klanzig, W., Quasi-elastic light scattering studies of native hepatic bile from the dog Comparison with aggregative behaviour of model biliary lipid systems. Biochemistry 23, 1994-2005... 

Figure 4.28 Results of small angle static light scattering studies of hematite aggregates formed at 10 mM and 100 mM KCl (pH stirrer speed 220 rpm).

Lo B., Waite T.D. (1998), Structure of ferric oxyhydroxide aggregates - a light scattering study, Chemeca 98 Conference, Port Douglas, Sept 1998, CD Rom. 

According to O Donnell et al. [130], the emulsion polymerization of vinyl acetate follows the Smith-Ewart theory of emulsion polymerization [131] because the rate of polymerization is independent of the total amount of monomer present, the rate is a function of the 0.6th power of the emulsifer concentration, and the rate of emulsion polymerization is a function of the 0.7th power of the initiator concentration instead of the expected 0.4th power. In this work poly(vinyl alcohol), 88% hydrolyzed with a medium molecular weight (i.e., Du Font s Elvanol 52-22), was used as the only externally added emulsifier. Light-scattering studies indicated that this emulsifier formed no aggregates in the aqueous solution. These latter observations may, however, have been made at room temperature and not at the reaction temperature [1]. The conversion versus time curve was essentially linear up to 80% conversion. 

Yu, E., Dem yantseva, N.P., Lysogorskaya, V.V., Klyubin, S., Zaitseva, V. A dynamic light scattering study of the temperature dependence of the size-distribution pattern and aggregation stabihty of sulfate lignin and wood resin in aqueous alkali solution. Russ. J. Appl. Chem. 75(1), 149-15 (2002)... 

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