Interaction of cellulose nanocrystals with titanium dioxide and peculiarities of hybrid structures formation
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In this work we prepared hybrid particles based on cellulose nanocrystals and titanium dioxide nanoparticles and studied their aggregate stability for a wide range of the components ratios. Electrosurface properties of cellulose nanocrystals and TiO2 greatly influence on morphology and properties of the hybrid particles. Sufficient amount of TiO2 nanoparticles in the hybrid dispersions make it possible to completely cover cellulose nanocrystals surface and form a core-shell structure. Derjaguin–Landau–Verwey–Overbeek theory calculations confirmed experimental data and possibility of TiO2 monolayer covering of cellulose nanocrystals surface. Summarizing the findings, we conclude about the mechanism of interaction between cellulose nanocrystals and titanium dioxide—at the first stage particles are attracted to one another due to long-range electrostatic forces; at the second stage hydrogen bonds are formed. It is found that control of the surface potential allows to obtain stable colloidal hybrid dispersions (having negative-charged or positive-charged particles), or hybrid systems with a neutral surface charge.
KeywordsHybrid particles Cellulose nanocrystals Titanium dioxide Electrostatic interaction DLVO theory Heterocoagulation
This work was supported by the Russian Foundation for Basic Research, grant No 16-33-108; Krivoshapkin P. V. is grateful to a Program of the Ural Branch of the Russian Academy of Sciences No 15-9-3-60. Most of the studies were carried out using the equipment of the Collective Use Center Khimiya, Institute of Chemistry, Komi Scientific Center, Ural Branch, Russian Academy of Sciences.
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Conflict of interest
The authors declare that they have no competing interests.
- 5.Wei H, Rodriguez K, Renneckar S, Vikesland PJ (2014) Environmental science and engineering applications of nanocellulose-based nanocomposites. Environ Sci: Nano 1:302–316Google Scholar
- 17.Golikova EV, Burdina NM, Vysokovskaya NA (2002) Aggregation stability of SiO2, FeOOH, ZrO2, CeO2, and natural diamond sols and their binary mixtures: 2. The photometric study of heterocoagulation of SiO2–FeOOH, SiO2–ZrO2, SiO2–CeO2, and CeO2–natural diamond binary systems in KCl solutions. Colloid J 64:142–148CrossRefGoogle Scholar
- 18.Elimelech M, Gregory J, Jia X, Williams RA (1995) Particle Deposition and Aggregation Measurement, Modelling and Simulation. Elsevier, Butterworth-Heinemann, WoburnGoogle Scholar
- 19.Lu S, Pugh RJ, Forssberg E (2005) Interfacial Separation of Particles. Elsevier, AmsterdamGoogle Scholar
- 22.Fu G, He A, Jin Y, Cheng Q, Song J (2012) Fabrication of hollow silica nanorods using nanocrystalline cellulose as templates. BioResources 7:2319–2329Google Scholar
- 27.Klemm D, Philipp B, Heinze T, Heinze U, Wagenknecht W (1998) Comprehensive Cellulose Chemistry; Volume 1: Fundamentals and Analytical Methods. Wiley‐VCH Verlag GmbH, WeinheimGoogle Scholar
- 35.Romanov DP, Baklagina YuG, Gubanova GN, Ugolkov VL, Lavrent’ev VK, Tkachenko AA, Sinyaev VA, Sukhanova TE, Khripunov AK (2010) Formation of organic-inorganic composite materials based on cellulose Acetobacter xylinum and calcium phosphates for medical applications. Glass Phys Chem 36:484–493CrossRefGoogle Scholar