PRIPRAVA NANOKOMPOZITNE MEMBRANE

Šegula, Adrijana

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Title:	PRIPRAVA NANOKOMPOZITNE MEMBRANE
Authors:	ID Šegula, Adrijana (Author) ID Sfiligoj Smole, Majda (Mentor) More about this mentor... ID Stana Kleinschek, Karin (Comentor)
Files:	UNI_Segula_Adrijana_2009.pdf (2,99 MB) MD5: C0DFE33E34789F80E06B8E09F80BEDB7 PID: 20.500.12556/dkum/a9a98829-86a3-4dc0-8352-a4f4eecfb042
Language:	Slovenian
Work type:	Undergraduate thesis
Organization:	FS - Faculty of Mechanical Engineering
Abstract:	Nanokompozitna membrana je bila pripravljena z UV fotopolimerizacijo Nisopropilakrilamida v pore porozne, hidrofobne polipropilenske membrane. V hidrogelno matriko smo vgradili še organsko modificiran plasteni silikat Montmorilonit (Nanofil 8). Hidrofobni Nanofil 8 smo dispergirali v vodni disperziji s pomocjo površinsko aktivnega sredstva (PAS) Inutec SP1. Najbolj stabilno disperzijo smo dobili pri uporabi 1g/L PAS. Stabilnost disperzije smo dolocili z merjenjem posedanja delcev s turbidimetrom. Gele smo pripravili z razlicnimi koncentracijami zamreževalca in dolocili kot najprimernejšo koncentracijo zamreževalca med 0,3 in 0,5 g v 20 mL topila Kot najucinkovitejša predpriprava polipropilenske membrane se je izkazala eno urna obdelava v acetonu in prenos še mokre membrane v raztopino monomera. S polimerizacijo hidrogela z vgrajenimi delci Nanofil 8 so se spremenile površinske lastnosti polipropilenske membrane. Pore membrane so se napolnile z nanokompozitnim hidrogelom, porozna struktura membrane pa se je ohranila.
Keywords:	nanokompozit, hidrogel, plasteni silikati
Place of publishing:	Maribor
Publisher:	[A. Šegula]
Year of publishing:	2009
PID:	20.500.12556/DKUM-12080
UDC:	620.3:66.081(043.2)
COBISS.SI-ID:	13740054
NUK URN:	URN:SI:UM:DK:MM47WXK8
Publication date in DKUM:	07.10.2009
Views:	2296
Downloads:	167
Metadata:
Categories:	KTFMB - FS
:	ŠEGULA, Adrijana, 2009, PRIPRAVA NANOKOMPOZITNE MEMBRANE [online]. Bachelor’s thesis. Maribor : A. Šegula. [Accessed 25 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=12080 Copy citation

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Secondary language

Language:	English
Title:	PREPARATION OF NANOCOMPOSITE MEMBRANES
Abstract:	Nanocomposite membrane was prepared by UV photopolymerization of Nisopropylacrylamide on the surface of porous hydrophobic polypropylene membrane. Particles of organically modified layered silicates (Montmorilonite (Nanofil 8)) were incorporated into the hydrogel matrix. Aqueous dispersion of hydrophobic Nanofil 8 particles was achieved with addition of surfactant Inutec SP1; 1 g/L of surfactant proved to be the most appropriate concentration, which was determined by measurement of particles’ sedimentation rate. The most suitable concentration of crosslinker, needed for the formation of hydrogel, was determined by varying different amounts of crosslinker and by comparison of resultant hydrogels’ properties; optimal amount of crosslinker ranges between 0,3 and 0,5 g in 20 mL of solvent. Optimal procedure for formation of nanocomposite membrane consists of pretreatment of membrane in acetone and then subsequent impregnation of a wet membrane in the solution of monomer. After the UV polymerization of the hydrogel inside the pores of the polypropylene membrane, altered surface properties of the membrane were achieved. Pores were filled with nanocomposite hydrogel, however, a porous structure of the original membrane is preserved.
Keywords:	nanocomposites, hydrogel, layerd silicates

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