| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Kemijska modifikacija površine vinilbenzil kloridnih poliHIPE materialov z metodo RAFT graftiranja
Authors:ID Cmager, Nuša (Author)
ID Krajnc, Peter (Mentor) More about this mentor... New window
ID Paljevac, Muzafera (Comentor)
Files:.pdf MAG_Cmager_Nusa_2018.pdf (2,97 MB)
MD5: 04F6F4D3A7B55940DBCC227B67FA296D
PID: 20.500.12556/dkum/9f0e100f-e8ae-48ba-b4dc-cef4f6162268
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V magistrskem delu smo uspešno izvedli graftiranje molekul glicidil metakrilata na funkcionaliziran DVB/VBC kopolimer. Z namenom priprave polimera, ki bi ga funkcionalizirali, smo uspešno sintetizirali DVB/VBC kopolimer, ki smo ga naknadno hiperzamrežili in mu bistveno povečali specifično površino. Specifična površina je dosegala vrednosti več kot 1000 m2/g. Polimer smo uspešno funkcionalizirali s tris(2-aminoetil) aminom in potrdili njegovo vezavo s FTIR spektroskopijo in elementno analizo. Sledila je imobilizacija izbranega RAFT reagenta 4-ciano-4-[(dodecilsulfaniltiokarbonil)-sulfanil] pentanojske kisline. Rezultati so pokazali prisotnost amidnega signala, ki je posledica reakcije med aminom in RAFT reagentom. Elementna analiza je pokazala zvišanje vsebnosti žvepla v materialu. Na koncu smo izvedli reakcijo graftiranja na površini sintetiziranega polimera z molekulami glicidil metakrilata. Izvedli smo reakcije na polimeru v prahu in polimeru v kosu. Rezultati so pokazali uspešnost na obeh primerih, vendar je bilo povečanje mase večje v primeru polimera v kosu. Vezavo molekul GMA smo okarakterizirali z vrstično elektronsko mikroskopijo, ki je v primerjavi z osnovnim polimerom prikazala bolj mehke in zabrisane linije. Te so posledica nove plasti na polimeru. Graftiranje smo okarakterizirali še s FTIR spektroskopijo, ki je potrdila prisotnost epoksidnega signala v materialu zaradi glicidil metakrilata.
Keywords:RAFT polimerizacija, hiperzamreženje, graftiranje, porozni polimeri, glicidil metakrilat, poliHIPE
Place of publishing:Maribor
Publisher:[N. Cmager]
Year of publishing:2018
PID:20.500.12556/DKUM-72784 New window
UDC:665.562.2(043.2)
COBISS.SI-ID:21928982 New window
NUK URN:URN:SI:UM:DK:FEXAX8QT
Publication date in DKUM:04.12.2018
Views:1398
Downloads:206
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:16.11.2018

Secondary language

Language:English
Title:Chemical surface modification of vinylbenzylchloride polyHIPE materials by RAFT grafting
Abstract:In the master's thesis, the grafting of glycidyl methacrylate molecules to a functionalized DVB/VBC copolymer was successfully performed. In order to prepare the polymer to be functionalized, we successfully synthesized the DVB/VBC copolymer, which was subsequently hypercrosslinked. With this procedure we increased the specific surface area. The specific surface has reached values of more than 1000 m2/g. The polymer was successfully functionalized with tris (2-aminoethyl) amine and we confirmed its binding with FTIR spectroscopy and elemental analysis. The immobilization of the selected RAFT agent 4-cyano-4-[(dodecylsulfanylthiocarbonyl) -sulfanyl] pentanoic acid followed. The results showed the presence of an amide peak as a result of the reaction between the amine and RAFT agent. Elemental analysis showed an increase in sulfur content in the material. Finally, the grafting reaction on the surface of the synthesized polymer with glycidyl methacrylate molecules was performed. We conducted reactions to the polymer in powder and to the polymer in a piece. The results showed the success of both cases, but in the case of polymers in a piece, the increase in weight was greater. The binding of GMA molecules was characterized by scanning electron microscope, which, in comparison with the basic polymer, showed more soft and blurred lines. These are the results of new polymer grafts. Grafting was also characterized by FTIR spectroscopy, which confirmed the presence of an epoxy signal in material due to glycidyl methacrylate.
Keywords:RAFT polymerization, hypercrosslinking, grafting, porous polymers, glycidyl methacrylate, polyHIPE


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