Colloid Journal

, Volume 79, Issue 2, pp 226–233 | Cite as

Stability of nanocrystalline cellulose in aqueous KCl solutions

  • V. I. Mikhailov
  • M. A. Torlopov
  • I. S. Martakov
  • P. V. Krivoshapkin


The electrokinetic properties and aggregation stability of nanocrystalline cellulose sols in aqueous KCl solutions have been studied at pH 5.2. Cellulose nanoparticles have been prepared via controlled degradation in a mixture of phosphotungstic and acetic acids. At electrolyte concentrations of <0.01 mol/dm3, the system is stable to aggregation. The experimentally determined threshold of fast coagulation is 0.08 mol/dm3. It has been noted that the structural component of disjoining pressure must be taken into account when considering the aggregation stability of nanocrystalline cellulose sols in terms of the DLVO theory. It has been shown that the sizes of water boundary layers decrease with an increase in the KCl concentration. The effect of medium pH on the electrokinetic potentials and sizes of aggregates has been studied.


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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. I. Mikhailov
    • 1
  • M. A. Torlopov
    • 1
  • I. S. Martakov
    • 1
  • P. V. Krivoshapkin
    • 1
    • 2
  1. 1.Institute of Chemistry, Komi Scientific Center, Ural BranchRussian Academy of SciencesSyktyvkarRussia
  2. 2.ITMO UniversitySt. PetersburgRussia

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