M.Sc. Tezi Görüntüleme

      In this study, the increase in efficacy of wood samples impgrenated with epoxidixed and non-epoxidized plant oils against burning was investigated. Soya bean and linseed oils having higher unsaturated fatty acid were used. Unsaturated double bonds in soya bean and linseed oils were activated by hydrogen peroxide.The sapwood of Scotch pine (Pinus sylvestrisL.)were impregnated with epoxidized and non-epoxidized plant oil with arange of single retention (140-170 kg/m3). Second impgrenation was made with 18% of montmorillonite clay in the range of single retention (50-150 kg/m3) in order to give the plant oil-impregnated wood samples as fire retardant property. There after the physical properties (water up take, water repellency, anti-swelling efficiency and tangential change), biological properties (Coniophora puteana and Trametes versicolor rot fungi), thermal properties (TGA and DSC) and burning properties (LOI) of the plant oil-impregnated wood samples and control samples were investigated. After two weeks of experimentation, the rate of water up take by plant oil and montmorillonite clay (MMT) impregnated wood samples decreased by half as compared to the control, 67% of water repellent activities was observed and the anti-swelling efficiency and the values of other epoxidized plant oil and plant oil with montmorillonite clay (MMT) impregnated wood samples variations were increased. Thegroup of wood samples impregnated with epoxidized plant oil and montmorillonite (MMT) decreased with respect to the tangentiall change. Decay fungi found on montmorillonite clay (MMT) impregnated wood samples increased in weight loss. The results of TGA and LOI tests also showed that resistance against burning of wood samples impregnated with montmorillonite clay (MMT) increased.