Interaction between α-Alumina Surface and Polyacrylic Acid
نویسندگان
چکیده
منابع مشابه
Comparison of complexed species of Eu in alumina-bound and free polyacrylic acid: a spectroscopic study.
The speciation of Eu complexed with polyacrylic acid (PAA) and alumina-bound PAA (PAA(ads)) was studied at pH 5 in 0.1 M NaClO(4). Structural parameters were obtained from (7)F(0) -->(5)D(0) excitation spectra measured by laser-induced fluorescence spectroscopy as well as from Eu L(III)-edge extended X-ray absorption fine structure (EXAFS) spectra. The coordination mode was also investigated by...
متن کاملA kinetic investigation of the flocculation of alumina with polyacrylic acid.
Using a model colloidal system of alumina and polyacrylic acid (PAA), the kinetics of flocculation was investigated at low polymer concentrations and short durations (on the order of seconds). The polymer-induced flocculation processes obeyed Von Smoluchowski's bimolecular rate equation. Increases in the concentration of the polymer resulted in higher rate constants for the flocculation process...
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The influence of solution pH (in the range 3-9) on the adsorption of polyacrylic acid (PAA) on the mixed silica-alumina surface (SA-3: SiO2 97 %-Al2O3 3 % and SA-96: SiO2 4 %-Al2O3 96 %) was investigated. The following methods were applied in experiments: spectrophotometry, viscosimetry, potentiometric titration, and microelectrophoresis, which enable determination of adsorbed amount of the pol...
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The interaction of a weak polyacid, sodium polyacrylate (PAA), and cationic mixed micelles of n-hexadecyl trimethyl ammonium chloride/n-dodecyl hexaoxyethylene glycol monoether (CTAC/C12E8) was studied by turbidimetric titrations at varying pH, in order to determine the effect of polymer charge. Electrostatically-driven complex formation is controlled by three variables: the polymer linear char...
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برهمکنش dnaتیموس گاوی طبیعی (ct-dna) با اتیلن دی آمین تترااستات (edta)در بافرtris-hcl با 8/7 ph ( دراین ph،edta به نمک دی سدیم تبدیل می شود) وسسامول در بافر tris-hcl با4/7 ph مورد بررسی قرار گرفته است. edta و سسامول استفاده فراوانی در تکنولوژی غذایی و صنعت شیمیایی دارند. مدل اتصال dna مربوط بهedta بوسیله اسپکتروفتومتری جذب، دورنگ نمایی حلقوی(cd)، ویسکومتری وژل الکتروفورز بررسی شده است. طیفuv ...
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ژورنال
عنوان ژورنال: Journal of the Ceramic Society of Japan
سال: 1992
ISSN: 0914-5400,1882-1022
DOI: 10.2109/jcersj.100.7