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Reološke lastnosti vodnih raztopin izbranih soli polialilamina
Kolman, Nejc (Author), Cerar, Janez (Mentor) More about this mentor... This link opens in a new window

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Abstract
Z ionsko izmenjevalno kromatografijo sem v raztopini poli(alilamin hidroklorida) kloridne ione zamenjal s hidroksidnimi in tako pripravil rahlo bazično raztopino polialilamina. Vzorce merjenih raztopin polialilaminskih soli sem pripravil z dodajanjem izbrane količine raztopin različnih kislin v založno raztopino polialilamina. Tako pripravljenim raztopinam izbranih soli (F-, Cl-, Br-, I-, ClO4-, NO3-, AcO-, CF3COO-, C6H13COO- in PhSO-) polialilamina z različnimi stopnjami nevtralizacije (od 0 % do 120 %) sem pri 20 °C oziroma 25 °C izmeril viskoznost, viskozni in elastični modul ter določil zeta potencial in hidrodinamski radij. Preučeval sem odvisnost teh lastnosti od vrste protiionov, koncentracije polielektrolita, molekulske mase polielektrolita in stopnje nevtralizacije. V delu skušam pojasniti vpliv ionov na izmerjene lastnosti raztopin.

Language:Slovenian
Keywords:Polialilamin, polielektrolit, viskoznost, elastični modul, viskozni modul, zeta potencial, hidrodinamski radij, protiioni, stopnja nevtralizacije
Work type:Master's thesis/paper (mb22)
Tipology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2021
COBISS.SI-ID:73994499 This link opens in a new window
Views:161
Downloads:30
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Secondary language

Language:English
Title:Rheological properties of aqueous solutions of chosen polyallylamine salts
Abstract:
With ion exchange chromatography I substituted the chloride ions in a solution of poly(allylamine hydrochloride) with hydroxide ions, obtaining a mildly basic solution of polyallylamine. I prepared measuring solutions of polyallylamine salts by adding different acid solutions to the batch solution of polyallylamine. The aqueous solutions of chosen polyallylamine salts (F-, Cl-, Br-, I-, ClO4-, NO3-, AcO-, CF3COO-, C6H13COO- in PhSO3-) with different degree of neutralization (from 0 % to 120 %) were characterized by measuring viscosity, elastic and viscous modulus as well as zeta potential together with hydrodinamic radious. I studied the effect of counterion type, polyelectrolyte concentration, polyelectrolyte molecular mass and the degree of neutralization on solution properties. In my thesis I explain the impact different ions have on the solution.

Keywords:Polyallylamin, polyelectrolite, viscosity, elastic modulus, viscous modulus, zeta potential, hydrodynamic radius, counterions, degree of neutralization

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