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Title:Vpliv ultrazvoka na velikost fotokromnih etilceluloznih kapsul
Authors:ID Glavica, Božica (Author)
ID Vončina, Bojana (Mentor) More about this mentor... New window
ID Volmajer Valh, Julija (Comentor)
Files:.pdf VS_Glavica_Bozica_2015.pdf (2,74 MB)
MD5: E1504990CCEFCEBD9E6CAB5A26312C51
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract: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.
Keywords:kapsuliranje, etil celulozne kapsule, fotokromizem, ultrazvok, mikrokapsule, nanokapsule
Place of publishing:Maribor
Publisher:[B. Glavica]
Year of publishing:2015
PID:20.500.12556/DKUM-47291 New window
UDC:677.466.017:544.57(043.2)
COBISS.SI-ID:18615318 New window
NUK URN:URN:SI:UM:DK:PGUR4OSS
Publication date in DKUM:14.04.2015
Views:1541
Downloads:191
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:Influence of ultrasound on size of photochromic ethilcellulose capsuls
Abstract: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.
Keywords:encapsulation, evil cellulose capsules, fotokromizem, ultrasound, microcapsules, nanocapsules


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