The Research For The Acetylation Of Cellulose And Wood Powder

Agricultural and forestry wastes such as the plants of trees and bushes, as the renewable resources, which could be used in commercial production, were not exploited adequately.In this paper, the processes for modification of cellulose and wood powder to produce the pollution-free and biodegradable acetylated products were performed. The reaction parameters were determined and optimized. It made sense to develop the low-carbon economy and achieve sustainable development in our china.The optimized parameters which included the microwave irradiation power, the amount of iodine, the reaction time and temperature were changed and the optimal reaction conditions were found which are the microwave output 400W, iodine concentration 15mol%, reaction time 30min and temperature 130oC. meanwhile, changing the corresponding parameters related to the modification of wood powder, the best reaction conditions which included the wood solution temperature,the molar ration of acetyl chloride and hydroxyl group,the reaction time and temperature were 110oC,1:1,90min and 80oC, respectively.Acetylated samples were characterized by FT-IR, CP/MAS13C-NMR, WRXD, SEM and thermogravimetric analysis. The thermal analysis indicated that the thermal stability and hydrophobicity of the two acetylated samples were higher than those of native samples. The SEM photomicrographs of wood powder and derivatives showed a highly porous and considerably more uniform and isotropic structure. Such properties, when coupled with the chemical and thermal characteristics of the acetylated samples could offer significant benefits as far as increased compatibility and improved process ability of wood with synthetic polymers.