Hello, I am preparing PVA/CNC/SiO2 composite, the mixture is very thick and not well mixed, if I dilute the solution, will it affect the properties?

Hello,

I want to prepare lipid nanoemulsion using high pressure homogenizer. I want to prepare coarse emulsion with high shear mixer, but I' m confused about rpm and right time for mixing? Any of you know a recipe or a experiment set to find out the best way? And which analysis show me which one is the best? Thank you for your answers.

Hi, I have exfoliated a mixture of graphite, pluronic f127, and water via Silverson shear mixer and after that I wanted to characterize the results via TGA. I want to show that after hours of exfoliation, Graphene exists in the precipitate and this can be illustrated in the TGA results where the weight percentage decrease clearly compared to the TGA results of graphite (the weight percentage barely decreases). My question is, after 4 hours of exfoliation, the weight percentage shows a small decrease from 100% to 97%. Any suggestions on what to do? I need the weight % of graphene (product of exfoliation) to clearly decrease in the TGA characterization.

Note that I used Nitrogen N2 in my TGA characterization. Should I use air flow instead of nitrogen flow? Thank you.

I want a homogenizer or a high speed mixer to prepare emulsions of heavy crude oil in water. My question is, can a blade or rotor type homogenizer get chocked due to heavy crude oil? also, what are the other problems while using homogenizer for heavy crude oil emulsification?

Hey there I'm experiencing a similar problem hope someone can help:

Suddendly the Uninet controller stopped connect to the system leading to continuously Uninet error 2000 coming out (Uninet controller is restarted). We had the same problem on and off in he past but we could solve it just running a manual run for a few second: after that all he components get connections to the system with the typical beeping and messages on the display.

This method unfortunately doesn't work anymore for some reason but if run a manual run only the UV detector makes the connection. After I stop the run message 2000 start appearing continuosly again with single errors 2012 related to faulty connection with any single component: error 2012 no response Pump, 0: error 2012 no response valve,1: error 2012 no response frac, 0.

I already tried to change the ethernet cable from the uninet controller to the pump module and I tried to bypass the mixer in the connection but I had the same result

Hi.

I'm doing research because I've heard from several co-workers mention that it is important to ensure at least 30% of the capacity of any mixer (V-mixer, biconic mixer, etc) to achieve homogeneous mixing into direct compression powders.

They mention that using less than 30% can be a factor that negatively affects the homogeneity of the powder mix but I cannot find any literature to support their claims.

Is the statement of my colleagues true or is it just a hoax that has been passed from generation to generation in the pharmaceutical industry?

I remain attentive to your kind answers and / or explanations about this matter as well as the bibliography that you want to share.

For your attention, thanks.

I have to find the solubility of glycine in water. The solubility module doesn't work and the values do not fit with literature values. Moreover, the Mixer and Heater blocks were used to calculate the solubility of glycine at different temperatures. How can the solubility be calculated in Aspen Plus?

I am currently trying to find the Impeller Reynolds number in a 1000 gallon industrial mixer which has 3 mixing blades: an auger, a shear, and perimeter blade. This calculation requires a viscosity value (equation below). The fluids I work with show high levels of shear thinning, therefore making it hard to find a viscosity value. What would be the best way to identify this viscosity value? I have access to an older Brookfield Rheometer but I do not believe I can replicate the shear from the industrial mixers.

Impeller Reynolds number = (n*D^2*s.g.)/viscosity

where

n: rpm

D: diameter

s.g: standard gravity

Thanks for any future help!

I am looking for a mini agitator (for test tubes or small flasks) that can fit within a small incubator in our anaerobic chamber. The dimensions need to be no more than 7" tall x 7.5" deep x 11" . So far I have not been able to find any on the market that are this small. Thanks!