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Title:Polimerne strukture s spremenljivo porazdelitvijo por : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Murenc, Nika Marija (Author)
ID Krajnc, Peter (Mentor) More about this mentor... New window
ID Kramer, Stanko (Comentor)
Files:.pdf UN_Murenc_Nika_Marija_2022.pdf (3,16 MB)
MD5: E260217DACDE7655E97D9B6A10348721
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomski nalogi smo želeli pripraviti material s stopenjsko velikostjo por, zato smo si najprej pripravili vzorce, kjer smo kot monomer uporabili trimetilolpropan triakrilat(TMPTA), mu dodali toluen, surfaktant Hypermer B246 (HB246) in fotoiniciator Irgacure 819 (I819). Tej organski fazi smo med mešanjem po kapljicah dodali 80 vol. % vodne faze. Ker nas je zanimala sprememba v velikosti por, smo pripravili vzorce, pri katerih smo dodajali različne deleže topila DMSO in THF (od 1% do 32%). Poleg dodajanja različnih deležev topil, pa smo pripravili tudi vzorce, ki smo jih mešali pri različnih hitrostih. Določili smo velikosti por, ki so se nahajale v območju do 60 µm, ter opazovali porazdelitve v tem območju glede na posamezni vzorec. Z elementno analizo smo dokazali, da se sestava pri posameznih vzorcih ni spremenila. S pomočjo navedenih določitev smo pripravili tri vzorce, ki so imeli dovolj veliko razliko v velikosti por, in s kombiniranjem teh pripravili materiale s stopenjsko poroznostjo. Zaradi dovolj velike viskoznosti HIP emulzij, smo vzorce preprosto prelili enega na drugega, ne da bi pri tem prišlo do mešanja emulzij, kar je omogočilo pripravo vzorcev s spremenljivo porazdelitvijo por.
Keywords:HIP emulzije, poliHIPE materiali, poroznost, porozni materiali, gradientni materiali, porozni gradientni materiali
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[N. M. Murenc]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (VIII, 28 f.))
PID:20.500.12556/DKUM-82752 New window
UDC:544.773.3.022.537(043.2)
COBISS.SI-ID:121402115 New window
Publication date in DKUM:15.09.2022
Views:591
Downloads:42
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:31.08.2022

Secondary language

Language:English
Title:Polymer structures with variable pore size distributions
Abstract:The objective of the thesis was to prepare a material with a graded pore size. Firstly, an organic phase, consisting of trimethylolpropane triacrylate (TMPTA), toluene, the surfactant Hypermer B246 and the photoinitiator Irgacure 819 was prepared. While the organic phase was mixing an aqueous phase consisting of calcium chloride was added drop wise to the organic phase. To prepare materials with different pore sizes different solvents, namely DMSO and THF, were used at various concentrations ranging from 1% to 32%. In addition to the change in solvent and concentration thereof, the stirring speed was also varied from 200 rpm to 600 rpm. To ensure that the elemental composition of the prepares samples had not changed with the addition of different solvents, elemental analysis was conducted. Lastly, materials with a graded pore size were prepared from the most suitable samples. The graded pore size samples were prepared by pouring the HIPEs one over another which was feasible due to the high viscosity.
Keywords:HIP emulsions, polyHIPE materials, porosity, gradient materials, porous gradient materials


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