Observing Fiber Morphology Pores Size to Achieve Successful Lignin Removal.

Pulp with high brightness can only be obtained if the lignin content in the unbleached pulp can be optimally removed. For this reason, enzyme and bleaching chemicals must be able to reach the cellulose-hemicellulose-lignin (CHL) structure in the Lignin Carbohydrate Complex (LCC) to peel the lignin molecule. Most research uses enzymes and bleaching chemicals without considering how they reach the CHL structure. This research deeply considered the penetration of enzymes and bleaching chemicals into the CHL structure through the pores in each fiber wall. The molecular sizes of enzymes and bleaching chemicals that must diffuse into the fiber structure and the molecular sizes of fiber pores that allow them to penetrate to reach the CHL structure are also considered. All these results are used to evaluate the normative results of the ECF bleaching of Eucalyptus Camaldulensis and Acacia Mangium Pulp. The results indicated that pore size significantly affected the achievement of a higher brightness of Eucalyptus Camaldulensis Pulp than Acacia Mangium Pulp. [ABSTRACT FROM AUTHOR]