Preparation of cellulose nanofibrils by high-pressure homogenizer and cellulose-based composite films

By Sun-Young Lee, S. Chun, I. Kang, Jong-Young Park. 2009

225 citations recorded by the source corpus.

Abstract Cellulose nanofibrils were prepared from starting material microcrystalline cellulose (MCC) by an application of a high-pressure homogenizer at 20,000 psi and treatment consisting of 0, 1, 2, 5, 10, 15 and 20 passes. Hydroxypropyl cellulose (HPC) films reinforced with those cellulose nanofibrils were prepared at different filler loading levels. According to the morphology study by scanning electron microscope (SEM), the complete filbrillation of the bulk cellulose fibrils to nanoscale and high aspect ratio was accomplished by the homogenization process. The HPC film reinforced with cellulose fibrils after the 5–10 passes through the homogenizer improved significantly the tensile modulus and strength values for the HPC films. The thermal stability of HPC films is not affected by the addition of the cellulose nanofibrils, although MCC has the lower thermal stability than neat HPC. The development of novel cellulose nanofibrils and composites with high strength can be achieved by an application of the homogenization process.

Subfields: Biomaterials, Electronic, Optical and Magnetic Materials, Plant Science

View Paper: https://www.semanticscholar.org/paper/90f8b5f1446b7a5481e7a57bff5becf401522701

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In Biomaterials

In Electronic, Optical and Magnetic Materials

In Plant Science

Citations in the corpus

Production and modification of nanofibrillated cellulose using various mechanical processes: a review. (2014, background): “Lee et al. (2009) examined the effect of various passing times (1–20) of microcrystalline cellulose (MCC) through microfludizer at 137.9 MPa on the morphology of cellulose nanofibrils.”
Nanofibrillation of pulp fibers by twin-screw extrusion (2015, unknown): “In addition, the application of additives such as ethylene glycol as well as hotcompressed water treatment enhanced the fibrillation of woody biomass in the TSE (Lee et al. 2009a, 2010).”
Mechanical characterization of cellulose nanofiber and bio-based epoxy composite (2012, background): “Cellulose nanofibers (CNFs) are one class of natural fibers that have shown remarkable mechanical properties [9] [10] [11] [12].”
Different preparation methods and properties of nanostructured cellulose from various natural resources and residues: a review (2015, methodology): “Although H3PO4 (Camarero Espinosa et al. 2013) and HBr (Lee et al. 2009b) have been used in order to prepare CNCs, H2SO4 and HCl are commonly applied in this process.”