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?
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,...
04 May 2019 9,867 4 View
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?
04 May 2019 500 2 View
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...
02 March 2019 3,072 3 View
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...
02 March 2019 6,837 1 View
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....
09 October 2018 409 4 View
09 October 2018 4,142 1 View
I want the detailed procedure for SARA analysis, solvents required, apparatus and also detailed procedure on how to perform column chromatography with multiple solvents.
08 September 2018 7,230 4 View
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...
08 September 2018 8,976 3 View
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.
08 September 2018 4,825 0 View
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...
07 August 2018 7,600 0 View
How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...
10 August 2024 942 3 View
Some sources say it is treated as Newtonian as ethylene glycol has a higher viscosity than water, which affects the flow characteristics in simulations. But some also say it is non-Newtonian.
09 August 2024 2,111 2 View
We intend to study the interaction between peptides and polymer (like PP, PE and PS) through MD simulations using Martini force fields ( Martini 2 for PP and Martini 3 for PE, PS). We have...
08 August 2024 4,842 0 View
is there any other way to heat a polymer evenly other than oil bath if so what are those and how to use it
06 August 2024 947 1 View
Are there any fluorescently labeled anti-Alpaca secondary antibodies raised in Donkey? So far I have only been able to find anti-Alpaca secondaries raised in Goat. Or is this not possible due to...
04 August 2024 4,255 1 View
What is the method for analytically calculating the wear and service life of polymer-polymer sliding pairs?
04 August 2024 1,078 1 View
Hi, I'm curious to know if data on chemical compounds from PubChem, such as water solubility properties, can be used to train a machine learning model for commercial purposes. Will this infringe...
30 July 2024 8,707 1 View
Hello everyone, I am try to understand the differences interaction between insoluble and soluble polymers in water with metal ions and how theit charge density (of metal ions) affect the interaction.
29 July 2024 6,350 3 View
If the pairs are similar, will it reduce the adhesion due to electric charges?
29 July 2024 3,185 2 View
I have different polymer solutions and I hypothesize that water molecules are retained based on the water-polymer interactions, so the amount of free water is less to intercat with drug tablet....
28 July 2024 9,545 6 View