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POLYHEDRAL OLIGOMERIC SILSESQUIOXANE POSS

POLYHEDRAL OLIGOMERIC SILSESQUIOXANE POSS Polymers are widely used in industry due to their light weight and ductility. However, they have a lower modulus and strength when compared to metals and ceramics, which may make polymers less attractive as engineering materials. Polymer nano composites, a new class of hybrid materials composed of polymers into which nano-sized inorganic particles are dispersed, can produce desirable structural and functional...

Nickel Oxide Nanomaterials

Nickel Oxide Nanomaterials NICKEL OXIDE NANOPARTICLES Nickel oxide is the chemical compound with the formula NiO. It is an important transition metal oxide with cubic lattice structure.  The mineralogical form of Nickel oxide is bunsenite which is very rare. Nickel oxide nanoparticles appear in green powder form and having average particle size less than 50?nm. Due to their special structures and properties, Nickel...

ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE

ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE Ultra high molecular weight polyethylene (UHMWP) is an extremely high viscosity polymer that is produced in the form of a powder. Structurally, UHMWP is a similar to HDPE (High Density Polyethylene) differing primarily in average length of its molecular chains. This class of linear polyethylene is appropriately termed “ultra high” because its average molecular weight is 10-100 times greater than...

Molybdenum Oxide Nano Particles

MOLYBDENUM OXIDE NANOPARTICLES Molybdenum oxides nano particles are one of the most attractive metal oxides due to their special structural characteristics. They comprise of two simple binary oxides, namely, MoO3 and MoO2. MoO3 has several polymorphs, such as the thermodynamically stable ?-MoO3 (space group Pnma), metastable ?-MoO3 (P21/c), ?-MoO3 (P21/m), and hexagonal metastable h-MoO3 (P63/m) where as MoO2, with its distorted rutile structure,...

Molybdenum Nanoparticles

Molybdenum Nanoparticles Molybdenum nanoparticles are transition metal particles and come in the size range of 10 – 100 nm (approx.) Molybdenum is represented by the symbol ‘Mo’. Molybdenum is a valuable alloying agent, as it contributes to the harden ability and toughness of quenched and tempered steels. It also improves the strength of steel at high temperatures. Molybdenum is used in alloys, electrodes and catalysts. Molybdenum...

Core Shell Nanoparticles

CORE SHELL NANOPARTICLES The materials at nano-dimension have significance importance in altering chemical, electrical, optical behavior associated with them. Nanomaterials show the Band gap alteration, magnetic properties tuning and surface area enhancement and some other useful properties. Initially the nanoparticles have much better properties than the bulk materials. Later on researchers found that heterogeneous, composite or sandwich colloidal...

IRON OXIDE DISPERSION

IRON OXIDE DISPERSIONS The dispersion is a system in which the particles are dispersed in a continuous phase of different composition or state. Nanopowders are the solid form of nanoparticles, which are usually, contains the micro sized agglomerate. These agglomerates can be re-dispersed using various methods like ultrasonication, stirring etc. These dispersions are the suspensions of nanoparticles in water or in any organic solvent. During the...

METAL ORGANIC FRAMEWORKS

METAL ORGANIC FRAMEWORKS (MOF’s) Metal-Organic Frameworks are coordinated compounds consisting of metal ions correlated to often rigid organic molecules to form one-, two-, or three-dimensional structures that can be porous. These metals are known to offer flexible, co-ordination environment with different geometries, e.g., tetrahedral, trigonal bipyramidal square and pyramidal octahedral. In addition, due to the usual liability of metal complexes,...

Iron Oxide Nanoparticles

IRON OXIDE NANOPARTICLES Iron (Fe) nanoparticles are metal particles, in the range of 10-100nm (approx.) Iron nanoparticles have three allotropic forms known as alpha, beta and gamma. Iron nanoparticles readily forms oxides. When Fe-nanoparticles reacts with air / oxygen, it readily forms Fe2O3 and Fe3O4 are formed which are named as hematite and magnetite respectively, in which hematite is found in alpha and beta state where as magnetite is found...