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FTIR analysis of the effect of heat treatment on wood corrosion resistance

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Document pages: 7 pages

Abstract: The corrosion resistance of wood can be improved by vacuum heat treatment. The nutrient content and sugar content of cellulose, hemicellulose and lignin during the growth of fungi were studied. The results show that with the increase of heat treatment time, the absorption peak corresponding to ch3-ch2 -, C = O and the Tensile vibration of benzene ring skeleton are obviously weakened. This shows that cellulose, hemicellulose and lignin are degraded to varying degrees. Samples with higher initial moisture content (MC) showed more nutrient degradation   h after 2 hours at the same heat treatment temperature. The results of chemical analysis are consistent with those of Fourier transform infrared spectroscopy (FTIR). Corrosion resistance testwed that the average mass loss of the heat-treated specimens was up to 10.8 , in contrast to 22.23 for the untreated specimens. Furthermore, the FTIR analysis of the heat and decay-resistance test showed that the vibration wave peaks that corresponded to CH3-CH2- at 2954 cm−1 showed noticeably less separation at higher heating temperature. This demonstrated that the cellulose hydrolysis in the wood decreased at higher heating temperatures, which explained why the decay resistance increased with increased heat treatment.

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