Fatima ezzahra Bouharras

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Questions related from Fatima ezzahra Bouharras

Does anyone have a hand on experience of 3,7-dibromophenothiazine preparation/synthesis?

Hello! Does anyone have a hand on experience of 3,7-dibromophenothiazine preparation/synthesis? I have tried many protocols including Br2 in AcOH and NBS in DCM or THF. All in vain. Pour in your...

23 November 2022 7,221 0 View

How to determine the molecular weight of PBS from NMR?

What is the equation for determination of DPn or molecular weight of polybutylene succinate (the polymer was prepared by polycondensation of diol and diacid) from NMR spectroscopy? TIA

02 October 2022 3,623 5 View

Can we take data from first scan in DSC to dertermine the crystallinity of polymer?

Generally, the first heating scan is representative of the products, whereas the cooling step and the second heating scan give information on the polymer . Related to dielectric measurements, can...

19 July 2020 4,150 3 View

Can we assimilate The Mn of ungrafted polymer to attached one?

In polymer nanocomposite synthesis by grafting from thechnique (RAFT or ATRP), we need to know the Molecular weight (Mn) of grafted polymer. Usually, we need to cleave the polymer from...

24 October 2018 9,838 3 View

How to convert weight loss (%) into mass (g) in TGA?

I prepared a nanocomposite system made from a polymer and inorganic filler and I need to determine from TGA the amount of each compound. The TGA provide the weight loss in % of the organic matter...

25 May 2018 2,309 11 View