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Effect of enzyme beating on grinding method for microfibrillated cellulose preparation as a paper strength enhancer
- Source :
- Cellulose. 24:3503-3511
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Hardwood bleached Kraft pulp was treated with an endoglucanase prior to Valley beating. The Valley-beaten pulp slurry was further ground with a particle grinder in order to evaluate the effect of enzyme beating on preparation of microfibrillated cellulose (MFC). The time required to make 100 mL Canadian Standard Freeness pulp slurry was greatly reduced by enzyme pre-treatment. The viscosity of the enzyme-beaten MFC slightly increased with grinder pass number; however, the rate of change in viscosity was much lower than that of non-enzyme-beaten MFC. The crystallinity of MFC decreased with grinder pass number for both cases. The drainage of the pulp slurry containing enzyme-beaten MFC was higher than that of the pulp slurry containing non-enzyme-beaten MFC. Further, the enzyme-beaten MFC subjected to the 10 passes grinding had the same tensile index as the MFC subjected to the 15 passes grinding. Thus, the mechanical energy for MFC manufacturing can be greatly reduced with enzyme beating.
- Subjects :
- Materials science
Polymers and Plastics
biology
Pulp (paper)
02 engineering and technology
Cellulase
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Grinding
chemistry.chemical_compound
chemistry
Kraft process
Pulverizer
Ultimate tensile strength
engineering
biology.protein
Slurry
Cellulose
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 1572882X and 09690239
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Cellulose
- Accession number :
- edsair.doi...........bdc92ea92db2e07e9b950f09c2b72bce