Spremembe vrednosti pH zaščitnih pripravkov med impregnacijo lesa : diplomsko delo (visokošolski strokovni študij); Changes of pH value of preservative solutions during impregnation : graduation thesis (higher professional studies)

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Spremembe vrednosti pH zaščitnih pripravkov med impregnacijo lesa : diplomsko delo (visokošolski strokovni študij) = Changes of pH value of preservative solutions during impregnation : graduation thesis (higher professional studies)

Horvat, Žiga, 1980-

Baker-etanolaminske pripravke uporabljamo za zaščito lesa že skoraj 20 let. Kljub temu mehanizem interakcij teh pripravkov z lesom še ni v celoti pojasnjen. Z željo osvetliti interakcije med vodnimi ... raztopinami bakrovega(II)sulfata in etanolamina smo smrekovo (Picea abies) žagovino namočili v 19 različnih kombinacij vodnih raztopin bakrovih aktivnih komponent. Poleg bakrovega(II) sulfata so ti zaščitni pripravki vsebovali še etanolamin in kvartarno amonijevo spojino ter bor ali oktanojsko kislino. Ves čas impregnacije smo spremljali pH vrednost sistema. Po 4 urah namakanja smo žagovino stresli na filtrirni papir in sprali z destilirano vodo. To impregnirano žagovino smo nato posušili pri 103 °C. Zatem smo določili vsebnost bakra in dušika v prahu. Ti dve vrednosti smo nato primerjali s spremembo vrednosti pH med impregnacijo. Rezultati so potrdili, da etanolamin močno izboljša vezavo bakrovih spojin na funkcionalne skupine lesa. Ugotovili smo, da je absorpcija bakra v lesu v povezavi s koncentracijo bakra v zaščitnem pripravku, pH vrednostjo sistema in spremembo vrednosti pH med impregnacijo. Nadalje smo potrdili, da sta absorpcija bakrovih spojin in absorpcija dušika ravno tako tesno povezani. Ta dejstva so pomembna za razvoj novih učinkovitejših zaščitnih pripravkov za les.

Type of material - undergraduate thesis ; adult, serious

Publication and manufacture - Ljubljana : [Ž. Horvat], 2007

Language - slovenian

COBISS.SI-ID - 1514121

Link(s):
http://www.digitalna-knjiznica.bf.uni-lj.si/vs_horvat_ziga.pdf
Repository of the University of Ljubljana – RUL

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Author
Horvat, Žiga, 1980-

Other authors
Humar, Miha | Petrič, Marko, 1962-

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Library/institution	City	Acronym	For loan	Other holdings
BF, Department of Wood Science and Technology, Lj.	Ljubljana	BFLES	reading room 1 cop.

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Links to authors' personal bibliographies	Links to information on researchers in the SICRIS system
Horvat, Žiga, 1980-
Humar, Miha	19106
Petrič, Marko, 1962-	00395

Source: Personal bibliographies and: SICRIS

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