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1.
Adsorption and antibacterial activity of soluble and precipitated chitosan on cellulose viscose fibers
Lidija Fras Zemljič, Tijana Ristić, Tina Tkavc, 2012, izvirni znanstveni članek

Opis: The aim and novelty of this work was to compare the adsorption of totally-soluble chitosan (acidic solution) against the adsorption of precipitated chitosan, onto cellulose fibers. The influences of both these chitosan-adsorption procedures on a final amino groupćs content in functionalized cellulose fibers were studied, using potentiometric titration and the conventional spectrophotometric C.I. Acid Orange 7 method. Surface modification and adsorption of chitosan were, in addition, monitored by determining XPS spectra. The antimicrobial activities of both chitosan- functionalised cellulose fibers were examined, in regard to pathogen bacteria and fungus.
Ključne besede: functionalized viscose, chitosan solution, precipitates, potentiometric titration, spectrophotometry, antimicrobial activity
Objavljeno: 01.06.2012; Ogledov: 1385; Prenosov: 237
.pdf Celotno besedilo (372,02 KB)
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2.
Determination of end-points in hydrolytic potentiometric titrations in Ca2+ -F- system
Danilo Dobčnik, Darinka Brodnjak-Vončina, 1993, izvirni znanstveni članek

Opis: Mathematical modelling of a multi-component titration system of hydrolytic titrations of metal ions is described. A comparison of the calculated and experimental titration curves and end volumes in the Ca2+ -F- system at different pH values of titrated solutions is presented. The determination of the end-point of titrations by several approximation and mathematical methods is described.
Ključne besede: titration, end-point, potentiometric, hydrolysis
Objavljeno: 05.07.2017; Ogledov: 385; Prenosov: 66
.pdf Celotno besedilo (17,50 MB)
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