State-of-the-art of cellulose nanocrystals and optimal method for their dispersion for construction-related applications

Hyung Joo Lee, Heon Seok Lee, Junwon Seo, Yong Hak Kang, Woosuk Kim, Thomas H.K. Kang

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

In this paper, we reviewed the existing literature on the fabrication of nanocomposites based on cellulose and cellulose nanocrystals (CNCs), and analyzed their dispersion mechanism with respect to their use in the field of construction. First, the existing literature on CNC-based nanocomposites that exhibit the physical and chemical properties of nanocellulose and CNCs was reviewed. Next, keeping the use of these nanocomposites in the field of construction in mind, we determined the optimal mechanical method for their dispersion as an alternative to the currently used harmful chemical techniques. To this end, we evaluated the dispersibility of colloidal CNCs using two dispersion methods: magnetic stirring (for stirring times of 60 min, 120 min, and 180 min) and high-pressure dispersion (at pressures of 345 × 105 Pa, 1035 × 105 Pa, and 1587 × 105 Pa, and one to three dispersion passes). The optimal dispersion conditions were determined by analyzing the size and zeta potential of the CNC particles. It was found that the difference in the average diameter was reduced by approximately 76% at 1587 × 105 Pa during high-pressure dispersion.

Original languageEnglish
Article number426
JournalApplied Sciences (Switzerland)
Volume9
Issue number3
DOIs
StatePublished - Jan 27 2019

Bibliographical note

Publisher Copyright:
© 2018 by the authors.

Keywords

  • Cellulose nano-crystals (CNC)
  • Construction applications
  • Optimal dispersion

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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