What is the best condition for washing bath of PVDF UF membranes?

10 September 2017 0 4K Report

After casting step, the nascent membrane is immersed in coagulation bath (pure water, 20 C). The second bath is related to washing the membrane and removing exist solvent. What is the best condition (time and temperature) of the second bath?

Badges
Science topic

More Foroogh Khodadadi's questions See All

How to prepare buffer solution with ph of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 using NaH2PO4 and Na2HPO4?

Dear researchers How to prepare buffer solution with pH of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 using NaH2PO4 and Na2HPO4? Should we use NaOH and HCl?

02 May 2024 3,331 1 View

How to draw a Pareto Chart based on response surface methodology (RSM) information in Design of experiments software?

Dear researchers, We analyze data by RSM in experimental design software. But, how to draw a Pareto Chart based on response surface methodology (RSM) information?

20 April 2024 9,457 3 View

How can we export 3D graphs from Design Expert software to word file without showing its explanation?

Hello esteemed researchers, I'm encountering an issue with exporting graphs from Design Expert software into a Word document; the graph explanations are included alongside the images. Could...

02 April 2024 6,437 0 View

In a sulfated compound such as calcium sulfate, how is sulfate converted to thiosulfate?

This is to produce ammonium thiosulfate from phosphogypsum.

01 December 2023 1,158 0 View

Why do not we prepare PVDF/DMc dope solutions in 90 C for flat sheet membrane fabrication as PVDF has a good thermal resistance?

Dear researchers, Why do scientists use temperatures between 60 to 70 C to dissolve PVDF in DMF or DMAc for membrane fabrication? Why do not we use a temperature of 90 C to dissolve it in a...

08 October 2023 6,527 0 View

Is it possible to use ice in the second wall of the condenser? What is your idea?

Dear researchers, Is it possible to use ice in the second wall of the condenser? What is your idea?

24 September 2023 7,521 0 View

What is the vacuum pump model in Memsys V-MEMD membrane distillation package?

There are a lot of different types of vacuum pump models like oil-sealed pumps and dry pumps, Vacuum water pumps, positive displacement pumps, momentum transfer pumps, entrapment pumps, and...

03 September 2023 6,775 1 View

Can I use a refrigerator compressor instead of a vacuum pump in a membrane distillation setup?

03 September 2023 2,196 1 View

How can I design a series of experiments using Design-Expert software?

I wanna design some experiments with these conditions: 1. Parameter A: It is 40, 50, 60, 70. 2. Parameter B: It is 3, 10, 50, 200.

02 September 2023 5,597 0 View

How to determine the purity of solvents (like DMAc, DMF) and nanoparticles (like SiO2) and PVDF polymer, PEG and PVP?

Dear researchers, I bought some membrane production materials like PVDF, DMF, DMAc, PEG200, PVP, SiO2, etc. How can I prove that these materials are pure and not from industrial grades or...

31 August 2023 5,977 3 View

How to heat polymer for about 130° without oil bath ?

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

How to Freeze Embryos for Spatial Transcriptomics?

Hello everyone, I am currently working on a project involving spatial transcriptomics on E14 mouse embryos. We need to perform cryosectioning without fixing the embryos. Here is the protocol we...

10 July 2024 5,985 0 View

What is the complete process of fetus skeleton plastination?

I am an anatomist in Kurukshetra, Haryana India. we are trying to plastinate a fetus skeleton. we have done two acetone baths. can we go for impregnation or not

22 May 2024 7,140 2 View

How to avoid formation of coagulation in core-shell emulsion polymers?

good morning, I'm synthesizing emulsion polymers via core-shell technology, but I face problems during the synthesis as I find large amounts of coagulation in the form of sand-like particles. Why...

20 May 2024 9,905 5 View

How to increase yield and purity of RNA from muscle of EEL using TRIzol??

For my project, I need to extract RNA from muscle tissue of EEL. I am trying but the yield is low and Purity not good. The 260:230 ratio is always below 1.50 and 260:280 ratio ranges 1.6-1.86 and...

15 May 2024 3,024 2 View

What's the mechanism that allow the blood to coagulate in vitro?

Explanation about blood coagulation in test tube

30 April 2024 6,362 2 View

Protein Inhibition Denaturation Assay: No absorbance detected at 660nm?

Methods are based on Chel-Guerrero and colleagues'Phytochemical Profile, Toxicity, and Pharmacological Potenti... . We use a 1M Tris buffer with pH of 6.8, with Bovine Serum Albumin as the...

25 April 2024 8,802 0 View

Could you advice me about rapid sample freezing with LN2, Isopentane?

Hi, I am a fresh master's student who just started to study Idiopathic Pulmonary fibrosis(IPF), and I am here to ask about how to freeze lungs with LN2 when I harvested lungs from mice because...

03 April 2024 2,213 1 View

What are the ice water bath conditions for the oxidation synthesis method?

The bulk-quantity 1D PANI nanowire/tubes were prepared as follows: analytical grade aniline (4 mmol) and tartaricacid (1 mmol) were dispersed in 10 mL of deionized water at room temperature with...

14 March 2024 4,316 2 View

Solubility of Li2WO4?

Dear ResearchGate Team We are working on the synthesis of the compound Li6[α-P2W18O62]·28H2O. First step is the dissolution of lithium tungstate Li2WO4 in boiling water. However, our >99% pure...

27 February 2024 2,138 2 View