Advancing Sustainable Production of High-Performance Cellulose Pulps.

Area of Science:

• Biotechnology
• Materials Science
• Sustainable Chemistry

Background:

• Growing demand for renewable resources in high-performance materials.
• Enzymatic hydrolysis presents an underexplored, sustainable alternative to conventional pulp refining.
• Alignment with circular economy principles and reduced environmental impact are key drivers.

Purpose of the Study:

• To investigate enzymatic hydrolysis for producing high-performance cellulose pulps.
• To evaluate the impact of enzyme cocktails (cellulase, xylanase) on industrial pulps.
• To optimize treatment conditions and assess resulting material properties.

Main Methods:

• Application of enzyme cocktails (cellulase and xylanase) to sulphite, bleached Kraft eucalyptus, and thermomechanical pine pulps.
• Varying enzyme loads (5-40 FPU/gdp) and reaction times (1-16 h).
• Systematic evaluation of chemical composition, structural morphology, and physical-mechanical properties.

Main Results:

• Pulp composition significantly influenced enzymatic treatment outcomes (fibrillation, swelling, fibre shortening).
• Optimized enzymatic pretreatment enhanced paper performance, including tensile strength and hydrophobicity.
• Significant improvements in air permeability and internal bonding were observed.

Conclusions:

• Enzymatic hydrolysis is a viable sustainable strategy for high-performance cellulose pulp production.
• This method can reduce energy expenditures compared to conventional refining.
• Enzymatically treated pulps are suitable as reinforcing fibres in packaging applications.