Barva in nihajni spektri z amini obdelanega bukovega lesa : diplomsko delo (univerzitetni študij) = Colour and vibrational spectra of beech wood treated with amines : graduation thesis (university studies)
Nagode, Gregor
S postopkom dimljenja z amoniakom in premazovanja vzorcev z vodnimi raztopinami amoniaka, etanolamina in trietanolamina smo izvedli luženje bukovega lesa. S kolorimetrom smo merili barvo tako ...luženega lesa, kemijske spremembe na površini luženih vzorcev pa smo spremljali z metodo nihajne (FT-IR) spektroskopije. Ugotovili smo, da lahko za patiniranje površin lesa agresivni amoniak nadomestimo z uporabniku prijaznejšima etanolaminom in trietanolaminom. Amoniak in amini verjetno kemijsko reagirajo s karbonilnimi skupinami hemiceluloze in funkcionalnimi skupinami ligninskega sistema. Da bi ugotovili, kako na kemijsko reakcijo vplivajo ekstraktivi, smo izvedli tudi ekstrakcijo bukovega lesa z organskimi topili. Ugotovili smo, da je prisotnost ekstraktivov pri reakcijah z amini pomembna, vendar pa z FT-IR tehniko kemijskih sprememb ekstraktivov zaradi dimljenja nismo zaznali.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [G. Nagode], 2003
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