Research Progress on Wood Delignification and Its Applications
Wood is a purely natural,low-cost,renewable material.At the microscopic level,wood was constructed through intermolecular force into a multi-layer skeleton structure composed of cellulose,hemicellulose and lignin.In recent years,due to its inherent advantages such as being non-toxic,light weight,anisotropy,high modulus,high strength and high toughness,wood had aroused great research interest among researchers.By combining its structural advantages and functional design,funclionalized wood with excellent properties could be obtained.The hemicellulose and lignin matrix bind cellulose fibril and form a layered structure in wood.The lignin in wood cell wall could be removed without changing the hierarchical arrangement of cellulose fibril,and the functionalized wood could be prepared by adding different functional materials.In view of this,this review summarized the main methods of various types of wood delignification(such as acid method,alkali method,deep eutectic solvent method,hydrogen peroxide method,etc.)and the applications of these functionalized wood materials(such as transparent wood,conductive wood,flexible materials,photothermal energy storage conversion materials,high mechanical performance composite materials,etc.),and looked forward to the future development prospects of delignification wood.
万方数据
维普
