ALL libraries (COBIB.SI union bibliographic/catalogue database)
13.
Electrokinetic properties of processed cellulose fibers
Stana-Kleinschek, Karin ; Ribitsch, Volker
Natural cellulose fibers (cotton) comprise several noncellulose compounds (hemicellulose, wax and pectin substances) and cationic impurities which cause problems during different absorption processes ...such as dyeing or final fiber finishing and coating.Therefore the chemical purification (NaOH boiling, enzymatic purification, demineralization, extraction or oxidative bleaching) is the most important step in cellulose textile finishing. Alternaive ways to describe the success of different processes in fiber purification which result in distinct surface charge and hydrophilicity are the determination of electrokinetic properties and water uptake of textile fibers. The zeta potential was determined by the streaming potential measurement as a function of pH. From the zeta potential-pH functions the adsorption potential for all ionic species ▫$\phi_i$▫ (i.e. ▫$\phi_K+$▫, ▫$\phi_H+$▫, ▫$\phi_Cl-$▫, ▫$\phi_OH-$▫, in case of potassium chloride solutions), the charge densities ▫$\sigma^k$▫ and the pK values are calculated according to the Börner and Jakobasch model. The degradation and removal of hydrophobic noncellulose compounds which cover the primary hydroxyl and carboxyl groups of the cellulose polymer is clearly shown by an increase of the negative zeta-potential of the plateau, which is in good agreement with the elektrokinetic parameters of cotton samples determined by the Börner and Jakobasch model. The electrokinetic parameters determined by the Börner and Jakobasch model can be used to describe the adsorption/dissociation ability of textile fibers. The progress of the fiber processing (cleaning) is reflected by the surface charge as well as the hydrophylicity of the fiber.
It was not necessary to add the material to the shelf.
Bibliographic material was successfully added on shelf.
Adding bibliographical material on shelf was not successful.
Material is already on the shelf.
Permalink
URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year
Impact factor
Edition
Category
Classification
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Select the library membership card:
DRS,
in which the journal is indexed
Database name
Field
Year
Links to authors' personal bibliographies
Links to information on researchers in the SICRIS system
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
