Is it possible to quantify allicin in organic solvent by using UV-Vis?

thank you

03 April 2018 2,543 0 View

How do thiosulfonate transform/convert to tetrathionate? Is it possible? In what way?

Hi everyone, Need your help again to understand the chemistry. what kind of reaction that possible to convert thiosulfonate --> thiosulfate --> tetrathionate does it through oxidation?...

09 October 2017 5,279 3 View

Im currently trying to analyse the graf of PL spectra. Could you please advise me on how to analyse this?

Studying about Carbon dots now.. Im trying to understand on how the pl spectra provide the information regarding surface area ets. based on the figure, does it means my emission wavelength have...

11 December 2016 5,972 2 View

Is UV VIS able to differentiate what conditions best for carbon dots?

currently im varying parameter like temperature, time and concentration in synthesis of carbon dots... I know the best analysis from PL spectrometry, which it can differentiate intensity at...

10 November 2016 679 1 View

Couldnt understand how adding ethanol, sodium hydroxide or acid help in the synthesis?

Hi, currently working on carbon dots synthesis. In the case of adding ethanol, the last step is evaporating, is it a must?

10 November 2016 6,220 1 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

What is the procedure to determine the permeability of concrete?

can anyone help me in this, it will help me with my research work

01 March 2021 834 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

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

How to identify what type of fillers are in a polymer?

Hello everyone, I have some PHAs blended with fillers and nucleating agents, yet I don't know what kind of fillers or nucleating agents. The producer has shut down and there's no way to get in...

24 February 2021 1,356 8 View

How can I selectively dry etch Ti on a polymer substrate?

24 February 2021 5,378 1 View