20.500.12556/RUL-172636 Kemijska analiza vzorcev svile Chemical analysis of silk samples Svila je sestavljena iz naravnih svilenih vlaken. Med procesom pridobivanja svile se uporabljajo različni postopki kot so obteževanje svile, barvanje in beljenje. S temi postopki izboljšajo njene lastnosti. Svila je narejena iz naravnih vlaken, ki so podvržene razgradnji. Osnovna strukturna enota svilenih vlaken je fibroin. Staranje svile povzroči spremembo kemijske sestave fibroina in to vpliva na lastnosti in videz svile. Stanje svile lahko poslabšajo tudi razne kontaminacije, obdelava s kemikalijami in postopki, uporabljeni med pridelavo. Analizirala sem zbirko 105 vzorcev svile. Vzorci niso bili označeni, zato sem jih najprej ustrezno poimenovala in fotografirala. Vzorce sem pripravila za merjenje pH. Sledila je XRF analiza, kjer predpriprava vzorcev ni bila potrebna. Določila sem pH območje zbirke. S podatki, pridobljenimi z XRF analizo, sem s pomočjo grafov predstavila kemijsko sestavo vzorcev. Rezultati so pokazali, da je večina vzorcev obdelana s postopkom obteževanja. Silk is made of natural silk fibers. During the silk production process, various processes are used, such as silk weighting, dyeing, and bleaching. These processes improve its properties. Silk is made of natural fibers that are subject to degradation. The basic structural unit of silk fibers is fibroin. Aging of silk causes a change in the chemical composition of fibroin, which affects the properties and appearance of silk. The condition of silk can also be worsened by various contaminations, chemical treatments, and processes used during production. I analyzed a collection of 105 silk samples. The samples were not labeled, so I first named them appropriately and photographed them. I prepared the samples for pH measurement. This was followed by XRF analysis, where sample preparation was not required. I determined the pH range of the collection. Using the data obtained with XRF analysis, I presented the chemical composition of the samples using graphs. The results showed that most of the samples were treated with the weighting process. svila pH XRF silk pH XRF true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-10 11:15:00 2025-09-10 11:15:06 2025-11-05 10:05:08 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 25392 255936259 Mohorcic_Tina_-_Kemijska_analiza_vzorcev_svile.pdf Mohorcic_Tina_-_Kemijska_analiza_vzorcev_svile.pdf 1 5FE269993DE139D8A8A5EF068D077BE5 50723c9328e87922e1b99b14b2f873a9a8751c69c74300facb59d5b64c5330d4 7b719f65-8e26-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=216626 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0