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Title:ŠTUDIJ ADSORPCIJE GALAKTOGLUKOMANANA NA POLIETILENTEREFTALAT
Authors:Hadela, Ajra (Author)
Strnad, Simona (Mentor) More about this mentor... New window
Šauperl, Olivera (Co-mentor)
Files:.pdf UNI_Hadela_Ajra_2014.pdf (1,84 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Zanimanje za raziskovanje biopolimerov iz obnovljivih virov se v zadnjem desetletju močno povečuje zaradi pomanjkanja naravnih virov energentov. Zanimiva skupina biopolimerov so hemiceluloze, ki imajo zaradi svoje strukturne raznolikosti možnost uporabe na različnih področjih. Pri proizvodnji termomehanske pulpe v papirni industriji so galaktoglukomanani prevladujoče hemiceluloze, ki se sproščajo v procesne vode. Raztopljene manane je mogoče iz vodne faze odstraniti z adsorpcijo na vlakna pulpe, s čimer se poveča trdnost proizvedenega papirja. Zato sem pri svojem delu postavila hipotezo, da se bo galaktoglukomanan vezal tudi na ostala vlakna in jim spremenil lastnosti. Namen diplomske naloge je bil adsorbirati galaktoglukomanan iz vodnih raztopin na poletilentereftalatna vlakna in jim s tem izboljšati hidrofilnost. Preizkušanja adsorpcije sem najprej opravila na polietilentereftalatnih modelnih filmih s pomočjo kremenove mikrotehtnice. Po ugotovljenem optimalnem postopku sem nato obdelala polietilentereftalatno tkanino in uspešnost adsorpcije ugotavljala z metodami določanja celotnega organskega ogljika in z infrardečo spektroskopijo. Nazadnje sem ugotavljala uspešnost povečanja hidrofilnosti obdelane tkanine z določanjem vsebnosti vlage, s tenziometrijo in s fotogoniometrijo. Rezultati so pokazali, da je bil uporabljen postopek adsorpcije galaktoglukomanana na polietilentereftalatno tkanino uspešen. S pomočjo določanja kontaktnih kotov z vodo, pa sem dokazala tudi povečanje hidrofilnosti polietilentereftalatne tkanine obdelane z galaktoglukomnanom.
Keywords:hemiceluloze, galaktoglukomanan, poliester, polietilentereftalat, hidrofilnost/hidrofobnost, kremenova mikrotehtnica, stični kot
Year of publishing:2014
Publisher:[A. Hadela]
Source:Maribor
UDC:602.4:677.494.674.074(043.2)
COBISS_ID:17646102 Link is opened in a new window
NUK URN:URN:SI:UM:DK:WPHYJG7O
Views:1038
Downloads:144
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:ADSORPTION STUDY OF GALACTOGGLUCOMAMNAN ONTO POLY(ETHYLENE TEREPHTALATE)
Abstract:The interest to research biopolymers from renewable resources, has been rising in the last decade, because of lack of natural energy resources. Hemicelluloses are an interesting group of biopolymers, due to their structural diversity and various application possibilities on different fields. In the production of thermomechanical pulp in paper industry, galactoglucomannas are dominant hemicelluloses, which are released in the process waters. Dissolved mannans can be removed from aqueus phase by adsorption onto pulp fibres, which increases the strenght of produced paper. My work hypothesis was that galactoglucomannan can also bind on other fibers and change their properties. The main purpose of this work was to absorbe galactoglucomannan from aqueus solutions on polyethylene terephtalate fibers and increase hydrophilicity of fibers. Firstly I tested adsorption possibilities on polyethilene terephtalate film models using quartz crystal microbalance. After determination of most optimal process, I used that process on polyethylene terephtalate fibers and evaluated the adsorption using total organic carbon and infrared spectroscopy methods. Finally, I tested the increase of hydrophilicity of treated fabric by determining moisture content and the use of tensiometry and photogoniometry.. The results showed that the procedure used to adsorb galactoglucomannan on polyethylene terephtalate fabric was successful. Through the determination of contact angles with water, I also demonstrated an increase of hydrophilicity of polyethilene terephtalate fabric treated with galactoglucomannan.
Keywords:hemicelluloses, galactoglucomannan, polyester, polyethylene terephtalate, hydrophlicity/hidrophobicity, quartz crystal microbalance, contact angle


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