Payas Dandekar

11 Questions 2 Answers 0 Followers

Questions related from Payas Dandekar

How to find interfacial tension of oil in water emulsion?

I have an oil in water emulsion of which i want to find interfacial tension using a pendant drop tensiometer. what is the correct procedure for the same?

05 May 2019 470 2 View

Why viscosity increases with torque and rpm?

I am calculating viscosity of my oil in water emulsion using a rotational viscometer with a disk shaped spindle. The fluid is less viscous upon observation. However when i measured the viscositu,...

05 May 2019 9,837 4 View

Does stability of emulsion depend in the way they are stored? (like in beakers and tubes)?

I have an oil in water emulsion in which more oil is dispersed in less amount of water, the oil is viscous in nature. the emulsion seems stable when kept in tubes while it the same seems unstable...

03 March 2019 3,052 3 View

Can a separated O/W emulsion be mixed again?

If an oil in water emulsion made by mixing oil in water using surfactant separates after sometime, then can it be mixed again to form the emulsion? Kindly provide references (if any) along with...

03 March 2019 6,817 1 View

How to make multiple emulsion samples of different composition from single large sample?

I am working on oil in water emulsion. i wanted to know that if i make a 250 ml emulsion of 60% oil and 40% water containing 1000 ppm surfactant and remove 50 ml from it for stability analysis....

10 October 2018 399 4 View

How to make multiple emulsion samples of different composition from single large sample?

I am working on oil in water emulsion. i wanted to know that if i make a 250 ml emulsion of 60% oil and 40% water containing 1000 ppm surfactant and remove 50 ml from it for stability analysis....

10 October 2018 4,129 1 View

What is the detailed procedure for SARA analysis of heavy crude oil?

I want the detailed procedure for SARA analysis, solvents required, apparatus and also detailed procedure on how to perform column chromatography with multiple solvents.

09 September 2018 7,193 4 View

What is the detailed process for column chromatography with multiple solvent systems?

I am working on crude oil and want to conduct SARA analysis which involves sequential elution with multiple solvent systems (4 as per ASTM procedure) i wany to know how to change solvent system in...

09 September 2018 8,950 3 View

What should be the diameter and height of the column if i want to separate 1gm or 0.5 gm of maltenes via SARA analysis?

I want conducting SARA analysis but i am unable to determine what dia column should i use and how much height od silica bed is required to effectively separate maltenes into 3 components.

09 September 2018 4,810 0 View

How to draw small volume samples (like microlitres) of a high viscous liquid such as a liquid polymer?

I want to add polymeric additive to my sample but i want to add it in ppm level concentrations so i don't know how to draw few microlitres of viscous liquid. i tried with a micropippete but some...

08 August 2018 7,586 0 View

What are polymer based viscosity reducers? how they reduce viscosity of heavy crude? what research is going on in this field?

what is the mechanism by which the viscosity of heavy crude is reduced? what type of polymers are used as viscosity reducers? are they commercially available?

07 July 2018 2,178 0 View