Pradeep Venkataraman

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The stability of crude oil droplets formed by adding chemical dispersants can be considerably enhanced by the use of the biopolymer, hydrophobically modified chitosan. Turbidimetric analyses show that emulsions of crude oil in saline water prepared using a combination of the biopolymer and the well-studied chemical dispersant (Corexit 9500A) remain stable(More)
Uniform hard carbon spheres (HCS), synthesized by the hydrothermal decomposition of sucrose followed by pyrolysis, are effective at stabilizing water-in-trichloroethylene (TCE) emulsions. The irreversible adsorption of carbon particles at the TCE-water interface resulting in the formation of a monolayer around the water droplet in the emulsion phase is(More)
Emulsification of oil from a subsurface spill and keeping it stable in the water is an important component of the natural remediation process. Motivated by the need to find alternate dispersants for emulsifying oil following a spill, we examine particle-stabilized oil-in-water emulsions. Emulsions that remain stable for months are prepared either by adding(More)
Iodine is necessary for synthesis of thyroxine within the thyroid gland. Iodine deficiency leads to hypothyroidism and goitre. Sometimes, even when sufficient iodine is present in food and water, goitre occurs. This could be due to some other competing ions in the ingested food and water, which prevent incorporation of iodine into the thyroid gland.(More)
1.0 Introduction Grazing incidence interferometry has been applied successfully to the measurement of the form of cylindrical parts [1]. An extension of this technique for the measurement of absolute diameter by comparison with a calibrated artifact of similar diameter (typically within 4-10 μm) has been described previously [2]. This limitation is directly(More)
Intermolecular potential models for water and alkanes describe pure component properties fairly well, but fail to reproduce properties of water-alkane mixtures. Understanding interactions between water and non-polar molecules like alkanes is important not only for the hydrocarbon industry but has implications to biological processes as well. Although(More)
This work describes a new method to selectively capture liposomes and other vesicle entities in the patterned pores of breath-figure polymer films. The process involves the deposition of a hydrophobe containing biopolymer in the pores of the breath figure, and the tethering of vesicles to the biopolymer through hydrophobic interactions. The process is(More)
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