UV-microspectrophotometry: A method to prove wood-modification with MMF?

Mahnert, Karl-ChristianNorwegian Institute of Wood Technology, Norway ; Georg August University of Göttingen, Germany (författare)

UV-microspectrophotometry : A method to prove wood-modification with MMF?

The modification of wood with methylolated melamine formaldehyde resin (MMF) belongs to the group of impregnation modifications. In the course of this study, Koto sapwood samples were impregnated with MMF-solutions in a full-cell vacuum-pressure process. The samples were cured at a maximum temperature of 120 ºC for 24 hours. To characterize the modification, the solution uptake (SU) and weight percent gain (WPG) of the samples were calculated. The fixation of the melamine as parameter for the degree of curing was examined by C/N analysis. Areal UV-microspectrophotometry (UMSP)-scans of ultra-thin transverse sections of an untreated control and MMFmodified samples at 240 nm were recorded. Additionally, photometric point measurements with a spot size of 1 μm2 in the range 230 nm and 350 nm were conducted. UMSP was proven as suitable technique for the quantitative analysis of MMF-modified wood.

LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Trävetenskap hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Wood Science hsv//eng
Melamine modification
MMF-resin
topochemistry
UV-microspectrophotometry
Forestry and Wood Technology
Skog och träteknik

Adamopoulos, StergiosTechnological Educational Institute of Thessaly, Greece(Swepub:lnu)stadab (författare)
Koch, GeraldThünen Institute of Wood Research, Germany (författare)
Militz, HolgerGeorg August University of Göttingen, Germany (författare)
Norwegian Institute of Wood Technology, Norway ; Georg August University of Göttingen, GermanyTechnological Educational Institute of Thessaly, Greece (creator_code:org_t)

Av författaren/redakt...: Mahnert, Karl-Ch ...; Adamopoulos, Ste ...; Koch, Gerald; Militz, Holger

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