Design of stable and new polysaccharide nanoparticles composite and their interaction with solid cellulose surfaces

Ivana Czabany, Silvo Hribernik, Matej Bračič, Manja Kurečič, Sabu Thomas, Karin Stana Kleinschek, Tamilselvan Mohan*

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

This study presents a simple and straightforward method for the preparation of aqueous-based stablepolysaccharide-metal oxide nanoparticles composites — composed of carboxymethyl cellulose (CMC)and titanium dioxide nanoparticles (TiO2NPs), and their interaction with the cellulose surface, ispresented. Using a combination of anionic polysaccharide CMC as a stabilizer agent and ultrasoundprobe sonication technique as an agitation tool, a highly stable dispersion of CMC/TiO2NPs compositesis prepared in water, with and without the presence of calcium chloride electrolyte, at various pHvalues. The results of the dynamic light scattering and the zeta-potential measurements showed thatthe quality, the stability of the dispersions and the hydrodynamic radius of the particles (ca, 200–300 nm) remain well-preserved for several weeks under normal storage conditions. The transmissionelectron microscope revealed that the morphology and size of the dry particles size (ca.25–50 nm)remain unchanged and are not influenced by the addition of the stabilizer CMC, the electrolyte orthe pH value of the solution. The presence of electrolyte and the low pH of the dispersions stronglyfavored an irreversible and enhanced deposition of CMC/TiO2NPs on cellulose surface as showed bya quartz crystal microbalance with dissipation. A linear correlation between the concentration of CMCand the adsorbed mass of polymer and NPs, and the water content of the adsorbed layers is observed.X-ray photoelectron spectroscopy and atomic force microscopy are combined to prove the successfulimmobilization of polymer and NPs on the cellulose surface. The knowledge gained from this studycan be extended not only for the stabilization of various metal oxide nanoparticles but also for thedevelopment of green polymer/NPs composites, that may have the potential to be used as functionalcoatings in biomedical (e.g. wound dressing) applications.
Originalspracheenglisch
Aufsatznummer100564
FachzeitschriftNano-Structures and Nano-Objects
Jahrgang24
DOIs
PublikationsstatusVeröffentlicht - Okt 2020

ASJC Scopus subject areas

  • !!Atomic and Molecular Physics, and Optics
  • !!Materials Science(all)
  • !!Condensed Matter Physics
  • !!Physical and Theoretical Chemistry

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