ISSN:
1435-1536
Keywords:
Surface rheology
;
adsorbed gelatin layers
;
surface tension
;
multilayer formation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Adsorbed gelatin layers have been characterized by measuring the surface equilibrium tension and surface rheological parameters of shear, found by surface creep experiments. After the determination of these parameters the solution below the adsorption layer (gelatin + phosphate buffer) was substituted by a gelatin-free phosphate-buffer-solution. The differences of the parameters calculated before and after the substitution of the bulk phase allowed us to prove some model assumptions of the protein adsorption and to characterize the physical contents of some of the surface rheological parameters determined. The parameters calculated and measured permit the distinction of three different concentration ranges of gelatin: 1) the range of reversible adsorption layer. 2) the ranges of saturated, irreversible adsorption layer, and 3) the range of multilayer formation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01451714
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