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Naslov:Vpliv fizikalno-kemijskih parametrov vlaken na rezultate protimikrobnih testiranj
Avtorji:Vodišek, Nives (Avtor)
Fras Zemljič, Lidija (Mentor) Več o mentorju... Novo okno
Strnad, Simona (Komentor)
Datoteke:.pdf MAG_Vodisek_Nives_2014.pdf (2,43 MB)
MD5: 30AC65FD1C3870D9376A68B00FDBC5CA
 
Jezik:Slovenski jezik
Vrsta gradiva:Magistrsko delo/naloga (mb22)
Tipologija:2.09 - Magistrsko delo
Organizacija:FS - Fakulteta za strojništvo
Opis:Potreba in zahteva po protimikrobni obdelavi tekstilij je zelo velika. Raziskanih je že precej različnih spojin, ki imajo te lastnosti, vendar jih je veliko škodljivih za ljudi in okolje. Zato je trend v iskanju naravnih in neškodljivih protimikrobnih sredstev. Žal pa je njihova vezava na tekstilno matrico in tudi stopnja učinkovitosti po navadi slabša. Problem s katerim smo se soočili že v diplomskem delu je, da smo dobili redukcijo mikroorganizmov na vzorcih, ki sploh niso bili obdelani s protimikrobnim sredstvom. Učinkovitost obdelanih tekstilij s protimikrobnimi sredstvi se določa z različnimi metodami, standardiziranimi in nestandardiziranimi. Vsaka od teh metod ima različen pristop k vrednotenju. Najbolj pogosto uporabljene so AATCC 100, AATCC 147, ASTM E 2149 in JIS L 1902. Problem pri nekaterih metodah je, da so rezultati pokazali nerazumljivo inhibicijo patogenih organizmov, kjer naj ne bi bila prisotna kot na primer pri neobdelanem vzorcu. Velikokrat prihaja tudi do napačne interpretacije rezultatov. Zato smo se v tem magistrskem delu osredotočili na testiranje neobdelanih tekstilnih vzorcev po različnih metodah. Izbrali smo najbolj pogoste in nam dostopne metode ASTM E 2149, ASTM E 2315 in JIS L 1902. Vzorce smo dali testirati v različne laboratorije. Kot vidimo v poglavju, Rezultati in meritve v preglednici 4.10 smo kljub temu dobili redukcijo mikroorganizmov. Zato smo preučili vpliv fizikalno-kemijskih parametrov vlaken, na mikrobiološke lastnosti vlaken.
Ključne besede:celuloza, bombaž, viskoza, PES vlakna, mikrobiološko testiranje, time-kill metoda ASTM E 2315, stresalna metoda ASTM E 2149, JIS L 1902, tenziometer, stični kot, površinska napetost, površinska energija
Leto izida:2014
Založnik:[N. Vodišek]
Izvor:Maribor
UDK:677.1/.4.017.86(043.2)
COBISS_ID:17849622 Novo okno
NUK URN:URN:SI:UM:DK:MYHRKF1F
Število ogledov:1234
Število prenosov:134
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:KTFMB - FS
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Sekundarni jezik

Jezik:Angleški jezik
Naslov:The influence of fibre physico-chemical parameters onto their antimicrobial properties
Opis:Antimicrobial treatment of textiles is nowadays widespread. On market there are a lot of different substances, which have that kind of properties, but a lot of them are dangerous for people and environment. That is way there is a need for explore natural and harmless agents. But their properties of binding and level of their effectiveness is not so good. The problem, which we also have in my bachelor work, was that we get the inhibition of microorganisms on samples, which were not antimicrobial treated. Efficiency of treated textiles with antimicrobial agents is measure with varied methods, standardized and non- standardized. Each of these methods has a different way to evaluate an antimicrobial treatment. The most used methods are AATCC 100, AATCC 147, ASTM E 2149 and JIS L 1902. Antimicrobial test methods should be performed under controlled, standardised conditions to guarantee reproducibility of the results. A back draw of the standardized tests is also that, they are performed in conditions that are rarely found during the normal use of textile product. Problem of some methods are that, some of the results show illogical inhibition of pathogenic microorganisms, where it should not, for example at untreated samples. Or the interpretation of their results is wrong. Regarding all this many laboratories apply, in addition to standardized methods, also other tests for screening antimicrobial activity of functionalized surfaces. In this master’s work we decided to focus on testing the untreated samples with various standardized methods. We selected the one that are most used and were in our access, ASTM E 2149, ASTM E 2315 in JIS L 1902. As you can see in fourth chapter in table 4.10, in spite of all that sometimes we still got the inhibition of microorganisms. Because we want to know the reasons, we studied physic-chemical properties.
Ključne besede:cellulose, cotton, viscose, PES fibers, microbial methods, time-kill method ASTM E 2315, shake-flaske method ASTM E 2149, JIS L 1902, tensiometer, contact angle, surface tension, surface energy


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