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Title:Vpliv temperature na učinkovitost obdelave celuloze s kopolimerom hitozan - eugenol
Authors:Škrjanec, Anja (Author)
Šauperl, Olivera (Mentor) More about this mentor... New window
Volmajer Valh, Julija (Co-mentor)
Files:.pdf VS_Skrjanec_Anja_2012.pdf (1,43 MB)
MD5: A16DF0A15D084035C6F83E34D42F8332
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Problem prisotnosti mikroorganizmov na tekstilijah so funkcionalne, higienske in estetske težave, zato se tudi na področju tehnologije tekstilnih materialov vse bolj uveljavlja zaščita pred delovanjem različnih patogenih mikrobov. Mikroorganizmi, prisotni na tekstilijah, so predvsem glive in bakterije, lahko pa tudi alge. Za dosego učinkovite protimikrobne zaščite se na področju obdelave tekstilnih materialov vse bolj uveljavlja naravna spojina imenovana hitozan. V smislu optimalne protimikrobne zaščite tekstilnega materiala pa obdelava s hitozanom ne daje vedno pričakovanih rezultatov. Iz tega razloga se zdi zanimivo hitozan kombinirati še s katero izmed naravnih protimikrobno delujočih spojin, na primer eugenolom. Eugenol je sestavni del nageljnovih žbic, ki mu prav tako, kakor hitozanu pripisujejo odlično protimikrobno aktivnost. Ker je eugenol tako rekoč netopen v vodi, je potrebna sinteza eugenola s hitozanom na način tvorbe graft-kopolimera. V raziskavi smo uporabili viskozo, kot predstavnico celuloznih vlaken zato, ker je celuloza biološko razgradljiv substrat ob hkratni dobri površinski aktivnosti, kar pomeni, da jo je v smislu protimikrobne obdelave možno relativno učinkovito funkcionalizirati. Razen uspešne sinteze kopolimera hitozan/eugenol je pomembna tudi temperatura obdelave/sušenja s kopolimerom obdelane viskoze, saj je s pravilno izbiro temperature možno zagotoviti pogoje za optimalno vezavo kopolimera na izbrani substrat. Za vrednotenje uspešnosti sinteze graft-kopolimera hitozan/eugenol smo izbrali FT-IR spektroskopijo, s katero smo semi-kvantitativno določili učinkovitost kopolimerizacije hitozana z eugenolom. Spektrofotometrično metodo Acid Orange VII smo izbrali kot metodo na osnovi katere smo določili delež dostopnih aminskih skupin. V raziskavo smo vključili še mikrobiološko testiranje po principu redukcije izbranih patogenih mikroorganizmov, kar je bilo izvedeno na Zavodu za zdravstveno varstvo Maribor. Dobljene rezultate smo primerjali z rezultati obdelave viskoze z 1 % raztopino hitozana.
Keywords:hitozan, eugenol, funkcionalizacija, viskoza, FTIR spektroskopija, Acid Orange VII, protimikrobnost
Year of publishing:2012
Publisher:[A. Škrjanec]
Source:Maribor
UDC:677.46.017(043.2)
COBISS_ID:17109270 New window
NUK URN:URN:SI:UM:DK:6CUXKE5M
Views:1947
Downloads:160
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:Influence of temperature to the efficiency of cellulose treatment using copolymer chitosan - eugenol
Abstract:The problems of the micro-organisms presence onto/into textile materials are functional, hygienic and aesthetic; therefore in the field of textile technology are increasingly claiming the protection against various micro-organisms. Micro-organisms present in the textiles are fungi, bacteria, and also algae, respectively. In order to achieve effective antimicrobial protection of textile materials against microorganism the natural compound called chitosan is very interesting. In the sense of optimal antimicrobial protection of the textile material, functionalization with chitosan does not always give the expected results. For this reason, it seems appropriate chitosan to combine with any natural antimicrobial active compounds, such as eugenol. Eugenol is an integral part of the cloves which similar as chitosan shows excellent antimicrobial activity. The eugenol is practically insoluble in water therefore the synthesis of eugenol with chitosan is needed to form graft copolymer. In this research the viscose as representative of cellulose fibers was used because of its good biodegradability and good surface activity, which means that in terms of antimicrobial treatment it can be relatively easily functionalized. Besides the successful synthesis of copolymer chitosan/eugenol, the treatment/drying temperature is also important because with the proper choice of the temperature, the conditions for successful binding of copolymer on the selected substrate can be fulfilled. FT-IR spectroscopy was used to evaluate the efficiency of synthesis the chitosan/eugenol graft copolymer. Spectrophotometric method Acid Orange VII was chosen as a method by which the proportion of available amino groups can be determined. In addition, microbiological testing of selected pathogenic micro-organisms which was carried out at the Institute for health protection Maribor was also included in the research. The results were compared with the results of viscose functionalized by 1 % solution of chitosan.
Keywords:chitozan, eugenol, functionalization, viscose, FTIR spectroscopy, Acid orange VII, anti-microbial


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