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Funkcionalizacija nanofibrilirane celuloze z reagentom Tempo : magistrska naloga = Functionalisation of nanofibrilated cellulose with the Tempo reagent : M. Sc. thesisLevanič, JakaCilj raziskave je bil ugotoviti ali lahko z različnimi kemičnimi in mehanskimi postopki pripravimo TEMPO modificirano nanocelulozo in jo uporabimo za pripravo novega, okolju prijaznejšega polimera, ... ki bi služil kot alternativa trenutno bolj uveljavljenim sintetičnim polimerom. Celulozna vlakna smo najprej kemično modificirali z uporabo (2,2,6,6-tetrametilpiperidin-1-) oksidanil (TEMPO) radikala in modificiran produkt mehansko obdelali do TEMPO oksidirane nanoceluloze. Le-to smo uporabili kot surovino za izdelavo estra s poliolom Desmophen 1262. Kemijske in fizikalne spremembe v materialih smo spremljali skozi celotnen postopek in jih med seboj primerjali. Ugotovili smo, da je s postopki kemične in mehanske obdelave možno pripraviti nanocelulozne fibrile z visoko vsebnostjo karboksilnih skupin, ki so primerne za izdelavo estra. Končni produkt, ester, smo analizirali s termičnimi metodami in IR spektrometrijo. Ugotovili smo, da se termične lastnosti sicer ne razlikujejo bistveno od celuloze in TEMPO modificirane celuloze, vendar IR spektroskopija kaže, da imamo v končnem produktu estrsko vez, ki je dokaz, da nam je uspelo cepiti poliol Desmophen 1262 na TEMPO oksidirano nanocelulozo. Dobljeni ester bi lahko uporabili kot nadomestek za uveljavljene sintetične polimerne materialeType of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Levanič], 2015Language - slovenianCOBISS.SI-ID - 2436489
Author
Levanič, Jaka
Other authors
Poljanšek, Ida |
Oven, Primož |
Petrič, Marko, 1962-
Topics
celuloza |
nanoceluloza |
TEMPO oksidacija |
cepljen polimer |
celulozni ester |
celulozni ester |
cellulose |
nanocellulose |
TEMPO oxidation |
grafted polymer |
cellulose ester |
cellulose ester
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Wood Science and Technology, Lj. | Ljubljana | BFLES |
reading room 1 cop.
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Shelf entry
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Levanič, Jaka | 38177 |
Poljanšek, Ida | 12041 |
Oven, Primož | 11223 |
Petrič, Marko, 1962- | 00395 |
Source: Personal bibliographies
and: SICRIS
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