| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Fazna inverzija v emulzijskih sistemih z monomeri tiolov in alkenov : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Marko, Jan (Author)
ID Krajnc, Peter (Mentor) More about this mentor... New window
ID Paljevac, Muzafera (Comentor)
Files:.pdf UN_Marko_Jan_2019.pdf (2,98 MB)
MD5: 1CCED3432870CFE65C0D2B7E7BC09228
PID: 20.500.12556/dkum/653c55b8-6e65-46cc-a045-39d89fa42bbd
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V tem diplomskem delu predstavljamo poskus ustvarjanja fazne inverzije v emulzijskem sistemu z monomeri tiolov in alkenov z visokim deležem notranje faze. Preizkušali in opisali smo dejavnike, ki vplivajo na porazdelitev faz v emulziji. Tako smo najprej spreminjali volumski delež notranje faze, nato masni delež surfaktanta in na koncu še temperaturo vodne kopeli, v kateri se je nahajal reaktor z emulzijo. Fazno inverzijo smo poskušali ustvariti v emulziji monomerov 1,6-heksandiol diakrilat in pentaeritritol tetrakis (3-merkatopropionat), pri čemer po polimerizaciji kot končni produkt dobimo visoko porozen polimer. V iskanju ustreznih pogojev za nastanek tega pojava smo spreminjali delež surfaktanta Pluronic L121, delež vodne faze, ki jo je predstavljala razredčena raztopina kalcijevega klorida heksahidrata, in temperaturo vodne kopeli. Zatehte monomerov in iniciatorja Irgacure 819 ter pogoji fotopolimerizacije in hitrost mešanja emulzije so bili tekom eksperimenta vedno enaki. S pomočjo vrstičnega elektronskega mikroskopa (SEM) smo preverili, pri katerih pogojih priprave dobimo namesto tipične strukture poliHIPE strukturo, kjer so praznine in zapolnjena mesta obrnjena. Uspelo nam je ustvariti monolit s črvičasto strukturo, ki nakazuje začetek fazne inverzije.
Keywords:polimer, poliHIPE, poroznost, tiol-en klik polimerizacija, fazna inverzija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[J. Marko]
Year of publishing:2019
Number of pages:IX, 25 str.
PID:20.500.12556/DKUM-74664 New window
UDC:544.773.32.015.4(043.2)
COBISS.SI-ID:22691862 New window
NUK URN:URN:SI:UM:DK:IPQZEIOM
Publication date in DKUM:10.10.2019
Views:1439
Downloads:100
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

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:03.09.2019

Secondary language

Language:English
Title:Phase inversion in emulsion systems with thiol and alkene monomers
Abstract:In this diploma thesis we introduce our attempt at creating a phase inversion in an emulsion system with thiol and alkene monomers with a high share of internal phase. We tested and described the factors that affect the distribution of phases in an emulsion. We began by changing the volume share of internal phase, then the mass share of the surfactant and in the end the temperature of the water bath, in which the reactor was resting. We were creating the phase inversion in an emulsions of monomers 1,6-hexanediol diacrylate and pentaerythritol tetrakis (3-mercatopropionate), which after the polymerisation gives us a highly porous polymer as a final product. In the search for appropriate conditions for this phenomenon we changed the share of surfactant Pluronic L121, the share of water phase, which was a diluted solution of calcium chloride hexahydrate in water, and the temperature of the water bath. The mass of both monomers and iniciator Irgacure 819, the conditions of photo polymerisation and the mixing rate of the emulsion all stayed the same throughout the experiment. With the scanning electron microscope we were able to check which conditions gave us the structure which is inverted in comparison to the typical poliHIPE structure. We managed to create a monolith with a worm-like structure, which indicates a beginning of the phase inversion.
Keywords:polymer, poliHIPE, porosity, thiol-en click polymerisation, phase inversion


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica