RESEARCH ON PREPARATION OF FIBER AND LIGNIN FROM BAMBOO WITH HIGH-BOILING ALCOHOL SOLVENT

In order to make fiber and lignin from bamboo,a high-boiling alcohol solvents(HBS) pulping procees with aqueous solvent of 1,4-butanediol was investigated.Bamboo chips were pulped with 70%-90% aqueous solution of 1,4-butanediol containing a small amount of catalyst at 180-200℃ for 30-90 min.HBS bamboo fiber is suitable for paper-making and producing cellulose derivatives by modification.Water-insoluble HBS lignin was separated from the liquor reaction mixture by water precipitation.HBS lignin has better chemical activity and lower ash content than (lignin) sulfonate.HBS lignin has potential applications in the fields of material science and engineering.High-boiling solvent could be recovered and recycled for pulping.