The Influence Of Enzyme Treatment On The Distribution Of The Lignin And Hemicellulose Of The High Yield Pulp Of Fast-growing Poplar

Energy and resource is becoming more and more important today, Treatment the pulpfiber for enzymes modified Through the enzyme treatment, modified those fiber materialsoriginally used to produce cheap raw materials of the paper, make it can be used to producehigh grade product, and it can greatly improve efficiency of resource utilization. Andtreatment the pulp fiber for enzymes modified through the enzyme treatment, have a widerange of applications in the pulp and paper technology in every part. hemicellulose enzymeand cellulose enzyme are applied to the research of waste paper deinking，and application inthe factory. Hemicellulose enzyme and cellulose enzyme are also reduce pulp Milling energyconsumption, improve the pulp Filter water performance, and improve the quality of beatingand hemicellulose used in bleaching aspects and so on all the results were very good. Laccaseused in the research of pulp deinking direction has also obtained the certain effect, and isconsidered as the most potential of bleaching enzyme，But we should see that many of thesestudies is stay in laboratory research phase, the application is difficult to solve. But it isexpected, the Enzyme treatment to the biological bleaching of pulp fibers as well as toimprove the quality of paper pulp bleaching have an attractive prospect, and continuousimprovements the paper performance.The paper mainly discussed the influence of enzyme treatment on the distribution of thelignin and hemicellulose of the high yield pulp of Poplar plasma, in order to further explainthe variation of pulp performance of enzyme treatment, and further research of pulpingmechanism, further study of pulping process, and how to be more reasonable reserve andremoving lignin and hemicellulose, And explain lignin and hemicellulose content to therelationship between the paper and pulp。The state of development of investigation on the lignin and hemicellulose was describedin this study as well as the development tendency of the distribution of the lignin andhemicelluloses. The high yield pulp of the Fast-growing poplar was treated with laccase,xylanase and cellulase and the right processing conditions of enzymes was determined.The lignin distribution of the high yield pulp of the Fast-growing poplar treated withenzymes above was investigated and the lignin distribution on the cell wall was analysed withdifferent enzymes. The distribution and amount of cellulose, hemicelluloses and lignin aredifferent and the differences have an effect on the assessment and use value of paper fibermaterials as well as the further effect on the quality of paper and the formulation of technical conditions. The pulp was studied with XPS and SEM-EDXA before and after the treatmentwith enzymes. It turned out that the ratio between oxygen and carbon of the fiber surfacedecreased by7.45%and7.05%after the processing of cellulose and xylanase respectively.But the ratio increased8.72%after the treatment with laccase. The lignin, carbohydrates andother components of the fiber surface changed differently which can help explain the functionmechanism of enzymes and the change of pulp performance with enzymes. Pulps which weretreated with different enzymes were observed by AFM (atomic force microscope).Thesurface morphology and surface Physical Form of pulp changed, which can help thequalitative analysis of the fiber before and after the treatment with enzymes.The hemicellulose distribution of the high yield pulp of the Fast-growing poplar treatedwith enzymes above was investigated and the distribution of hemicelluloses on the cell wallswas studied. The mechanism of pulp making, the pulp technology and the distribution ofhemicelluloses and lignin were discussed. The studies were done by TEM and AFM. Thesurface morphology and roughness of the pulp changed with the changes of the hemicelluloseamount of the pulp. The lignin concentration of morphology regions of the fiber and the totallignin amount changed.At last, by analyzing the data, changing mechanism of enzyme treatment high yieldpulp performance of Fast-growing poplar is discussed in this paper.