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HomeAuthorsRangari V.K.

Authors: Rangari V.K.

SC-15 Epoxy Reinforced with Magnetic Nanofillers under Uniform Magnetic Field – An Investigation of Anisotropic Physical Properties

Malkina O., Mahfuz H., Sorge K.D., Rondinone A.J., Chen J., Rangari V.K., Florida Atlantic University, US
SC-15 epoxy is used in many industrial applications. It is well known that the mechanical and viscoelastic properties of epoxy can be significantly enhanced when reinforced with nanofillers. In this work, SC-15 epoxy is reinforced [...]

Mechanochemical and Sonochemical Synthesis of Bio Based Nanoparticles

Hassan T.A., Rangari V.K., Fallon V., Farooq Y., Jeelani S., Tuskegee University, US
•The size reduction process for seashell particles can be efficiently used for the production of Aragonite CaCO3 bio nanoparticles. A mechanichemical and sonochemical method was developed to synthesize bio calcium carbonate nanoparticles.

Alignment of Si3N4 nanorods in Polypropylene single fibers

Rangari V.K., Yousuf M., Jeelani S., Tuskegee University, US
We have successfully aligned the silicon nitride nanorods in polypropylene single filaments through melt extrusion process. Significant enhancement in tensile properties has been observed for 1wt% rod shaped Si3N4 particles. The tensile results clearly show [...]

Thermal and Mechanical Response of POSS coated Nanophased expandable foam core materials

Jones W.D., Rangari V.K., Jeelani S., Tuskegee University, US
A sonochemical technique has been established to coat variations of POSS nanoparticles on expandable microspheres. Thermal analyses results indicate that there is an increase in thermal stability of nanophased foam as compared to the neat [...]

In-situ synthesis of Cu nanoparticles on MWCNTS using Microwave irradiation

Rangari V.K., Dey S., Jeelani S., Tuskegee University, US
Microwave irradiation technique is successfully used to synthesize the copper coated MWCNTS in a one-pot reaction with and without surfactant. Since the graphite carbon absorbs the (in 2min 1100oC) maximum microwave radiation had led to [...]

Sonochemical Coating of TiC nanoparticles on expandable polymeric microspheres, Thermal & Mechanical properties of microspheres/epoxy nanocomposites

Rangari V.K., Hassan T.A., Mayo T. Watson Q., Jeelani S., Tuskegee University, US
Summary • Sonochemical method has been developed to coat nanoparticles on expandable polymeric microspheres. • n-Hexane is used as a solvent and proved to be a suitable solvent for sonochemical coating of nanoparticles on these [...]

Synthesis of Shear Thickening Fluid Using Sonochemical Method

Rangari V.K., Hassan T.A., Mahfuz H., Jeelani S., Tuskegee University, US
Shear thickening fluid is developed using sonochemical method which one step process and can be processed from its dry metal oxide powder forms instead of its colloidal solution. The main problem with the current process [...]

Improvements in High Specific Strength Epoxy-Based Composites using High Magnetic Fields

Mahfuz H., Zainuddin S., Rangari V.K., Jeelani S., Tuskegee University, US
Numerous studies have been carried out, over a period of several years, on the detection of changes in physical characteristics of polymers subjected to high magnetic fields during the curing stages. Extremely large increases in [...]

Investigation of Thermal and Mechanical Response of Nylon-6 Filaments with the Infusion of Acicular and Spherical Nanoparticles

Mahfuz H., Hasan M.M., Rangari V.K., Jeelani S., Tuskegee University, US
It has been demonstrated in recent years that infusion of nanoparticles in thermoset as well as in thermoplastic polymers can help improve the chemical, thermal, and mechanical properties significantly. The improvement in properties can be [...]

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