Skip to main content

Nanocrystalline Cellulose and Its Applications

Nanocellulose is a term referring to nano-structured cellulose. This may be either cellulose nanocrystal (CNC or NCC), cellulose nanofibers (CNF) also called microfibrillated cellulose (MFC), or bacterial nanocellulose, which refers to nano-structured cellulose produced by bacteria.
Crystalline Nanocellulose (Nanocrystalline Cellulose) has interesting mechanical properties for use in material applications. Its tensile strength is about 500MPa similar to that of aluminum. Nanocrystalline cellulose's stiffness is about 140–220 GPa, comparable with that of Kevlar and better than that of glass fiber, both of which are used commercially to reinforce plastics. Films made from nanocellulose have high strength, high stiffness and high strain. Nanocrystalline cellulose's strength/weight ratio is 8 times that of stainless steel. Fibers made from nanocellulose have high strength up to 1.57 GPa and stiffness up to 86 GPa.
Crystalline Nanocellulose  as nanofiller has been a focus of attention as it exhibits attractive advantages such as low cost, low density, better uniformity and durability, and biodegradability. The high strength and stiffness as well as the small dimensions of nanocrystalline cellulose may well impart useful properties to composite materials reinforced with these fibers, which could subsequently be used in wide range of applications. The versatility and adaptability of bionanocomposites enable these nanocrystalline cellulose-based materials to be utilized for biomedical applications. Given that one of the characteristics of medical biomaterials is biocompatibility, or the ability to function properly in the human body to produce the desired clinical outcome without causing adverse effect, nanocrystalline cellulose as a bioderived material can be a promising biomaterial.
Now let's look at usage of nanocrystalline cellulose-based composites in biomedical applications. Crystalline Nanocellulose (Nanocrystalline Cellulose) is called the eye of biomaterial, and is highly applicable to the biomedical industry, including in drug release systems, scaffolds for tissue engineering, skin replacements for burns and wounds, stent coverings and bone reconstruction nerves, gum and duramater reconstruction, and blood vessel growth. Several attractive characteristics of nanocrystalline cellulose have made it favorable for this application, such as low production cost as compared to biopolymers, abundance, obtained from sustainable source, nontoxicity, biocompatibility, and excellent mechanical properties. Furthermore, since it is present in nanoscale, nanocrystalline cellulose possesses high surface area, which presents broad possibilities for chemical modifications.
Labels:

Comments

Post a Comment

Popular posts from this blog

Molybdenum Trioxide Nanoparticles/Nanopowder and Applications

General Information about Molybdenum Trioxide                                                     Molybdenum trioxide is chemical compound with the formula MoO3. Its chief application is as an oxidation catalyst and as a raw material for the production of molybdenum metal.  Molybdenum Trioxide  is a very light blue powder. Molybdenum Trioxide Nanoparticles/Nanopowder and Their Applications                                                    Like many  nanoparticles/nanopowder , Molybdenum Trioxide nanoparticles/nanopowder are used as catalysts. These catalysis reactions include hydrogenation catalysis and cracking catalysis. Molybdenum Trioxide nanoparticles/  nanopowder are useful for...
Post a Comment
Read more
Carbon Nanotubes Specifications and Properties Carbon Nanotubes, simply CNTs, are allotropes of carbon with a round and hollow nanostructure. These barrel shaped carbon molecules have crucial properties, which are significant for nanotechnology, hardware, optics and other different fields of materials science and innovation. The carbon nanotube’s excellent quality as a strong and firm material laid the basis on many applications. Not to mention carbon nanotubes exceptional heat conductivity, electrical and mechanical properties, Carbon Nanotubes are used as additives to diverse auxiliary materials. In terms of rigidity and flexibility Carbon Nanotubes are the stiffest and strongest materials. These quality outcomes from the covalent sp2 bonds framed between the individual carbon molecules. Unlike Graphene , Carbon Nanotubes are either conductive or semiconducting along the tubular hub. Carbon Nanotubes also have absorption, fluorescence properties. Bulk Carbon nanotubes are util...
Post a Comment
Read more

Hydroxyapatite Nanopowders and Their Applications

Hydroxyapatite, is a naturally occurring mineral form of calcium apatite with the formula Ca 5 (PO 4 ) 3 (OH). Pure hydroxyapatite powder is white. Naturally occurring apatites can, however, also have brown, yellow, or green colorations, comparable to the discolorations of dental fluorosis. Hydroxyapatite Nanopowder/Nanoparticles (50 nm, 99.95+%)  has been widely used as a biocompatible ceramic in many areas of medicine, but mainly for contact with bone tissue, due to its resemblance to mineral bone. In mammals, the skeleton presents a carbonated and partially substituted apatite, based on nanocrystal aggregates, and associated with collagen, building up 3-D structures present in various bone tissue conformations like trabecular or cancellous bone. There has been growing interest in developing bioactive synthetic ceramics that could closely mimic natural apatite characteristics. As mentioned before,  Hydroxyapatite Nanopowder  is the main inorganic constituent of bon...
Post a Comment
Read more