What properties you monitor when you make a gel out of polyacrylamides? (like viscosity/ water content etc?)?

When making gels from polyacrylamide, what kind of properties of the gel I should monitor in order to make sure that I am consistently producing the same every time? Any suggestions? Thank you

07 August 2017 7,595 0 View

What is the best way to make polyesters/polyurethanes out of organic diol monomers with siloxanes?

I know enzyme catalyzed reactions and Ti(OBu)4 catalyzed reactions make such polyesters with siloxanes (PDMS), but are there any other methods?

04 May 2013 401 0 View

My material is 'photobleaching' in fluorescence microscope. What does this mean?

I have a material containing coumarin in it. When my collaborator takes fluorescence microscopic images of the material using DAPI filter, he mentioned me that the sample is photobleaching. As a...

31 December 2012 1,592 11 View

Are there any commercially available 'photodegradable' polymers?

I am looking for photodegradable polymers which are commercially available and cheap. Please let me know if you are aware of such polymers.

31 December 2012 8,949 2 View

Can anyone suggest me some reviews on this topic: " Photoreversible polymer systems: Applications in Materials Chemistry/ Biochemistry ?

Applications of photoreversible systems

01 February 2012 647 1 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

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I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

How can we theoretically calculate Elemental analysis(percentage) of atoms in covalent organic framework?

For example in one research article the Elemental analysis values of COF-TpPa-1 ( Triformylphloroglucinol (Tp) (63 mg, 0.3 mmol), Paraphenylenediamine (Pa-1) (48 mg, 0.45 mmol) are as follows...

24 February 2021 1,265 6 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View