Effects of Cellulase Modification on Fiber Surface and Quality of Masson Pine Mechanical Pulp

Qing Luo; Xin Ping Li; Ye Liu

doi:10.4028/www.scientific.net/AMR.291-294.3405

Paper Titles

A Method for Calculating Deformation of Long-Distance Pipeline Based on Strain
p.3385

The GPU-Based Parallel Implementation of Phase Information Extraction of Multi-View Images
p.3391

Gear Fault Diagnosis Method Based on Cyclostationary Degree and HMM
p.3397

Wireless Sensor Network (WSN) Using in Tunnel Environmental Monitoring for Disaster Prevention
p.3401

Effects of Cellulase Modification on Fiber Surface and Quality of Masson Pine Mechanical Pulp
p.3405

The Research on Green Project Management Evaluation Method of Construction
p.3409

Study on the Coordination Compound of Human-Like Collagen with Copper (II)
p.3415

Analysis on Evolution of Landscape Pattern in Dianchi Basin Based on RS and GIS
p.3419

The Research of Impact in Pipe Pile Squeezing Soil to Bearing Capacity of the Pile
p.3424

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Effects of Cellulase Modification on Fiber Surface...

Effects of Cellulase Modification on Fiber Surface and Quality of Masson Pine Mechanical Pulp

Abstract:

At present, paper industry has a lot of problems in China, such as the shortage of forest resources and high cost of pulping. Paper industry must be seeking high yield and low cost pulping process. In order to reduce the cost of mechanical pulp and increase the use of mechanical pulp, a lot of research and patent showed that the refining energy consumption of mechanical pulp would be further decreased using the corresponding enzyme to modify fiber of the raw materials before refining. The effects of cellulases modification on masson pine mechanical pulp were investigated in this paper. The modification conditions were as follows: the dosage of enzyme 75IU/g (to bone dry materials), temperature 500C, time 150min, pH value 5.5 and pulp concentration 15%. The effects of cellulase modification on the surface and quality of masson pine fiber of mechanical pulp were investigated by scanning electron microscope (SEM), atomic force microscopy (AFM) and fiber quality analyzer (FQA). It was found from the images of SEM that the original fiber surface was smoothly but markedly corroded after the cellulase modification. Moreover, the modification brought about more external fibrillation and longitudinal tearing during refining. AFM measurement results showed that the fiber surface roughness was improved after the cellulase modification because that the middle lamella, primary wall and outer layer of secondary wall were broken. The results of FQA measurement showed that the average fiber length increased slightly.