20.500.12556/DKUM-47291 Vpliv ultrazvoka na velikost fotokromnih etilceluloznih kapsul Influence of ultrasound on size of photochromic ethilcellulose capsuls V diplomskem delu smo se osredotočili na pripravo etil celuloznih kapsul s fotokromnim barvilom. Izdelavo kapsul smo preizkusili na različne postopke, kot so mešanje kapsul z magnetnim mešalom in s pomočjo ultrazvočne sonde pod vplivom ultrazvočnega mešala z različno stopnjo amplitude. Velikost tako pripravljenih etil celulozne kapsul smo opazovali z optičnim mikroskopom. Meritve velikost pripravljenih kapsul smo opravili z metodo dinamičnega sipanja laserske svetlobe (DLS). Ugotovili smo, da mešanje mikrokapsul s pomočjo ultrazvoka bistveno vpliva na velikost kapsul; z večanje amplitude ultrazvoka (najvišja amplituda 90%) smo uspeli pripraviti kapsule reda velikosti nano kapsul, njihova velikost je znašala okoli 200 nm. Ugotovili smo tudi, da so pripravljene kapsule stabilne in se ne aglomerirajo. In diploma work ethylcelulse capsules which contained photochromic dyestuff were prepared. The stirring of capsules was carried out by means of magnetic stirring and by using of ultrasound with different amplitude. The size of prepared capsules was observed by using optical microscope, the size of capsules and the size distribution were measured by the method of dynamic light scattering (DLS) We determined that the ultrasound amplitude (amplitude 90%) influences on the capsules size; we manage to prepare capsules with the size of around 200 nm. It was determined that the prepared capsules were stable and that they were not prone to agglomerate. kapsuliranje etil celulozne kapsule fotokromizem ultrazvok mikrokapsule nanokapsule encapsulation evil cellulose capsules fotokromizem ultrasound microcapsules nanocapsules true true false [B. Glavica] Slovenski jezik Angleški jezik Diplomsko delo 2015-01-29 10:25:27 2015-04-14 09:43:24 2022-05-20 03:07:34 2021-05-06 03:22:57 2015 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677.466.017:544.57(043.2) 18615318 URN:SI:UM:DK:PGUR4OSS VS_Glavica_Bozica_2015.pdf VS_Glavica_Bozica_2015.pdf 1 E1504990CCEFCEBD9E6CAB5A26312C51 95655479fe189a9f22a86839ec64b0bd2f043ed4e55fbecd0c3bac1b0f6d7df6 8816fa44-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=69906 Fakulteta za strojništvo 0 0 0