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Spray Drying Enzyme-Treated Cellulose Nanofibrils

Journal Article · · Polymers

Enzyme-treated cellulose nanofibrils (CNFs) were produced via a lab-scale mass colloider using bleached kraft pulp (BKP) to evaluate their processability and power requirements during refining and spray-drying operations. To evaluate the energy efficiency in the CNF refining process, the net energy consumption, degree of polymerization (DP), and viscosity were determined. Less energy was consumed to attain a given fines level by using the endoglucanase enzymes. The DP and viscosity were also decreased using the enzymes. The morphological properties of the enzyme-pretreated spray-dried CNF powders (SDCNFs) were measured. Subsequently, the enzyme-pretreated SDCNFs were added to a PP matrix with MAPP as a coupling agent. The mixture was then compounded through a co-rotating twin-screw extruder to determine whether the enzyme treatment of the CNFs affects the mechanical properties of the composites. Compared to earlier studies on enhancing PMCs with SDCNF powders, this research investigates the use of enzyme-pretreated SDCNF powders. It was confirmed that the strength properties of PP increased by adding SDCNFs, and the strength properties were maintained after adding enzyme-pretreated SDCNFs.

Sponsoring Organization:
USDOE
OSTI ID:
2202330
Alternate ID(s):
OSTI ID: 2471440
Journal Information:
Polymers, Journal Name: Polymers Journal Issue: 20 Vol. 15; ISSN POLYCK; ISSN 2073-4360
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

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