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Funkcionalizacija viskoze s hitozanom v kombinaciji z 1,2,3,4 butantetrakarboksilno kislino (BTCA) : magistrsko deloTompa, JasnaViskozna vlakna spadajo v skupino regeneriranih celuloznih vlaken in predstavljajo zanimiv nosilni substrat za potrebe proti-mikrobnih obdelav. Enaizmed najbolj obetajočih proti-mikrobno delujočih ... spojin sodobnega časa je hitozan. V tej raziskavi smo viskozo za dosego njene proti-mikrobne učinkovitosti obdelali z hitozanom v kombinaciji z 1,2,3,4 butantetrakarboksilno kislino BTCA, ki predstavlja dober nadomestek za formaldehidne reagente, namenjene obdelavi za izboljšanje mečkavosti materialov iz celuloze. Poudarek raziskovalnega dela je bil usmerjen tudi v izvor temperature obdelave, saj smo predpostavili, da bi sušenje s pomočjo mikrovalov lahko ugodno vplivalo na bolj učinkovito zamreženje viskoze. Učinkovitost zamreženja viskoze smo ovrednotili z različnimi analiznimi metodami. S FT-IR spektroskopijo smo potrdili nastanek estrnih povezav med hidroksilnimi skupinami viskoze in karboksilnimi skupinami BTCA. Učinkovitost zamreženja se odraža tudi na spremembi mehanskih lastnosti, zato smo z merjenjem kota poravnave ter pretržne sile in raztezka proučili morebitno poslabšanje mehanskih lastnosti viskoze po zamreženju. Glede na mehanizem zamreženja je pomemben tudi delež dostopnih karboksilnih skupin BTCA, ki so pozamreženju prisotne v materialu. Zato smo za določanje le teh uporabili klasično indirektno metodo metilensko modro. Kot najpomembnejši kriterij naloge, v smislu protimikrobne učinkovitosti, smo izbrali delež dostopnih aminskih skupin. Tega smo ovrednotili s spektrofotometrično metodo C.I. Acid Orange VII in mikrobiološkim testiranjem. Rezultate smo nato primerjali z rezultati, dobljenimi na osnovi klasičnega načina obdelave po tako imenovanem postopku suhega zamreženja. Na ta način smo ocenili uspešnost obdelav, izpeljanem po enem in drugem postopku.Type of material - master's thesis ; adult, seriousPublication and manufacture - Maribor : [J. Tompa], 2011Language - slovenianCOBISS.SI-ID - 15766038
Author
Tompa, Jasna
Other authors
Šauperl, Olivera |
Stana-Kleinschek, Karin |
Neral, Branko
Topics
zamreženje |
FT-IR spektroskopija |
pretržna sila |
pretržni raztezek |
metilensko modro |
kot razgubanja |
crosslinking |
FT-IR spectroscopy |
breaking strength and elongation |
wrinkle recovery angle |
methylene blue
Library | Call number – location, accession no. ... | Copy status |
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Library of Technical Faculties, Maribor | knjižnica MD-FS(T)-2011 B2 TOMPA J. Funkcionalizacija | available - reading room |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Tompa, Jasna | 34982 |
Šauperl, Olivera | 07003 |
Stana-Kleinschek, Karin | 07814 |
Neral, Branko | 05537 |
Source: Personal bibliographies
and: SICRIS
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