Naslov
Study of the Wood Modification Process with Polycarboxylic Acid & Microwave Treatment

Autori
Bischof Vukušić, Sandra ; Katović, Drago ; Flinčec Grgac, Sandra ; Trajković, Jelena ; Šefc, Bogoslav ; Vončina, Bojana

Izvornik
Wood research (Bratislava)h (1336-4561) 55 (2010), 3; 121-130

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
chemical modification of wood ; BTCA ; CA ; microwave treatment ; FT-IR ; dimensional stability

Sažetak
Wood specimens of fir (Abies alba Mill) and beech (Fagus sylvatica L.) are chemically modified by polycarboxylic acids (PCA) and analysed by Fourier transform infrared (FT-IR) spectroscopy that is used to evaluate the differences between convection and microwave curing. A new non-formaldehyde crosslinking system is composed of two most prominent PCAs, e.g. 1, 2, 3, 4-butanetetracarboxylic acid (BTCA) and citric acid (CA). These reagents require a phosphono-based catalyst, thus a sodium hypophosphite (SHP) catalyst is used in the study. The effects of the PCAs treatment are compared with the previously introduced 1, 3-dimethylol 4, 5-dihydroxy-ethylene urea (DMDHEU) treatment. Further intensification of the processes of wood modification and an increase in the quality of wood-based materials is achieved by microwave treatment. Dimensional stability of the modified wood is determined by anti-swelling efficiency (ASE), using the water soak/oven dry method. The results revealed the improvement of ASE of the wood modified by PCAs, as compared by the DMDHEU treatment.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija, Drvna tehnologija

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