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Title: Facile synthesis of highly hydrophobic cellulose nanoparticles through post-esterification microfluidization

Source: Fibers. 6(22): 1-14.

Author(s)Lin, Chunxiang ; Ma, Qianli ; Su, Qiaoquan ; Bian, Huiyang ; Zhu, J.Y.

Publication Year: 2018  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4709-2B

Abstract: A post-esterifcation with a high degree of substitution (hDS) mechanical treatment (Pe(hDS)M) approach was used for the production of highly hydrophobic cellulose nanoparticles (CNPs). The process has the advantages of substantially reducing the mechanical energy input for the production of CNPs and avoiding CNP aggregation through drying or solvent exchange. A conventional esterifcation reaction was carried out using a mixture of acetic anhydride, acetic acid, and concentrated sulfuric acid, but at temperatures of 60–85 ◦C. The successful hDS esterifcation of bleached eucalyptus kraft pulp fbers was confrmed by a variety of techniques, such as Fourier transform infrared (FTIR), solid state 13C NMR, X-ray photoelectron spectroscopy (XPS), elemental analyses, and X-ray diffraction (XRD). The CNP morphology and size were examined by atomic force microscopy (AFM) as well as dynamic light scattering. The hydrophobicity of the PeM-CNP was confrmed by the redispersion of freeze-dried CNPs into organic solvents and water contact-angle measurements. Finally, the partial conversion of cellulose I to cellulose II through esterifcation improved PeM-CNP thermal stability

Keywords: Esterifcation; hydrophobic; cellulose nanoparticles; nanofbrils; microfuidization

Publication Review Process: Formally Refereed

File size: 25,600 kb(s)

Date posted: 09/14/2018

This publication is also viewable on Treesearch:  view
RITS Product ID: 91831
Current FPL Scientist associated with this product
Zhu, JunYong
Research General Engineer
  

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