can i determine the degree of amination using TGA?
i have copolymer and make modification on it using amine to insert amino groups
if i have the TGA of the copolymer and aminated copolymer
how can i determine the degree of amination ?
the polymer is cellulose grafted with PAN.. cyano groups of PAN will convert to amine .
thanks..
Dear Samar Khattab ,
Although I never tried to determine the amination degree by using TGA, I can recommend you a technique:
Since you have both pure copolymer and aminated copolymer TGA's, the comparison between both thermograms should give yourself information on the temperature at which the degradation of the amino groups begin. This mass change (which can be seen from a peak in the derivative curves) may let you calculate the mass of amino groups released, by considering the initial mass of the sample. With these two masses, you may calculate a degree of amination.
Another option is to perform a TGA-MS analysis, if is possible, in which you can observe what compounds are being released during the TGA analysis. This is more accurate, but also more expendive to perform.
Best of luck!
Agustin Forchetti Casarino thank you very much, i will take a shot and get something from DTG.
For hydrate and solvate materials, by tga can determine the amount of water or solvent bounded to the compound under study. This will determine if it is one to one molecular ratio, i.e. mono hydrate, and so on. By tga, one can also distinguish if water molecules are not bounded, i.e. surface water.
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