Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

• DOI: 10.1371/journal.pone.0229907
• Publication Date: 2020-03-17T17:36:42Z
• Authors: Meihui Wu; Juwan Jin; Chengyang Cai; Jingbo Shi; Xuefeng Xing; Jiabin Cai
• Keywords: Thermogravimetric analysis; Urea-formaldehyde; Thermal Stability

To investigate the effects of urea-formaldehyde (UF) resin impregnation combined heat treatment (IMPG-HT) on pyrolysis behavior poplar wood, chemical composition, characteristics, kinetics, and gaseous products released during untreated (control), IMPG-HT, IMPG HT woods were analyzed. The results demonstrate that IMPG-HT changes wood significantly. Unlike control samples, thermogravimetric / derivative (TG/DTG) curves shift toward lower temperature, shoulder DTG weaken or even disappear. maximum mass loss rate samples decreases, carbon residual yield increases to 23% more activation energy (E) sharply after conversion (α) reaching 0.80. improves thermal stability which is represented by increase decomposition temperature (Td) peak (Tpeak) higher E value wood. For products, produces nitrogen-containing gases (HNCO NH3) due presence UF resin, but amounts these are less than produced because had removed part N elements.