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Bioinspired lubricating films of cellulose nanofibrils and hyaluronic acid
- Publication Year :
- 2016
-
Abstract
- The development of materials that combine the excellent mechanical strength of cellulose nanofibrils (CNF) with the lubricating properties of hyaluronic acid (HA) is a new, promising approach to cartilage implants not explored so far. A simple, solvent-free method to produce a very lubricating, strong cellulosic material by covalently attaching HA to the surface of CNF films is described in this work. A detailed analysis of the tribological properties of the CNF films with and without HA is also presented. Surface and friction forces at micro/nanoscale between model hard surfaces (glass microspheres) and the CNF thin films were measured using an atomic force microscope and the colloid probe technique. The effect of HA attachment, the pH and the ionic strength of the aqueous medium on the forces was examined. Excellent lubrication was observed for CNF films with HA attached in conditions where the HA layer was highly hydrated. These results pave the way for the development of new nanocellulose-based materials with good lubrication properties that could be used in biomedical applications. (C) 2015 Elsevier B.V. All rights reserved.
- Subjects :
- Materials science
Friction
Surface Properties
Hyaluronic acid
Thin films
Nanofibers
02 engineering and technology
010402 general chemistry
Microscopy, Atomic Force
01 natural sciences
Nanocellulose
chemistry.chemical_compound
Colloid
Colloid and Surface Chemistry
Polymer chemistry
Materials Testing
Lubrication
Colloid probe technique
Physical and Theoretical Chemistry
Cellulose
Thin film
ta216
Lubricants
Photoelectron Spectroscopy
Osmolar Concentration
Reproducibility of Results
Water
Surfaces and Interfaces
General Medicine
Tribology
Hydrogen-Ion Concentration
021001 nanoscience & nanotechnology
Microspheres
0104 chemical sciences
Glass microsphere
chemistry
Chemical engineering
Ionic strength
Nanofiber
Cellulose nanofibrils
Glass
0210 nano-technology
Biotechnology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....28e8a1cea25a7dc79fb369cf26e390f9