How to calculate Yield of a unknown using internal standard in NMR ?

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How to prepare sample for DMA analysis, Tg and Modulus (dimensions and method) ?

I have some polyacetal samples which are brittle in nature. I would like to run DMA using Q800 TA instrument. I have never used DMA before. What type of dimensions (L*W*T) are best? and which...

01 February 2020 7,647 2 View

How to calculate the TON or TOF (Turn Over Number/Frequency) of a catalyst in a polymerization reaction ?

We are doing polymerization reactions with Salen Mn and Zn diketiminate complexes, working on reaction kinetics.

01 February 2018 4,559 3 View

What solvent/solvent system would be best to synthesize crystals of a salen Mn (N) complex ?

The complex is a green color powder compound. Tried toluene alone, could not get crystals. We have to present X ray crystal data for this complex

09 October 2017 3,880 2 View

Can we get the Tg (glass transition temp) for viscous polymers ? what properties would be better to take for a viscous polymer ?

Is it necessary to be in the solid state to get the Tg for a polymer?

03 April 2016 5,325 9 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

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

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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...

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How to polymerize TEOS?

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02 March 2021 1,404 6 View

Do you know any MR image dataset?

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02 March 2021 7,735 3 View

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

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28 February 2021 7,882 2 View

What could be some reasons why unstimulated monocytes are getting activated?

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Does the circuit modeling for planar monopole antennas using Foster canonical forms give good approximation?

Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...

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POlymer+DMSO solution and moisture??

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Maksim Fomin

Hello Srikanth,

it is quite simple:

Cx = (Ix / Ical) * (Ncal / Nx) * Ccal,

where I, N, and C are the integral area, number of nuclei, and concentration of the compound of interest (x) and the calibrant (cal), respectively.

For more information, see

http://nmrweb.chem.ox.ac.uk/Data/Sites/70/userfiles/pdfs/quantitative-nmr.pdf

https://www.sigmaaldrich.com/content/dam/sigma-aldrich/docs/Sigma-Aldrich/Brochure/1/qnmr-brochure-rjo.pdf

Srikanth Vijjamarri

Thank you maksim.