Agnieszka Suliga

4 Questions 13 Answers 0 Followers

Questions related from Agnieszka Suliga

Is it possible to calculate activation energy (Ea) of degradation from a single TGA scan?

I work on modification of epoxy resin system with silicon nanoparticles. The concentration of nanoparticles varies (5,10,15 and 20%). I performed a TGA scan for all 4 samples at the same heating...

01 January 2017 7,329 6 View

How to interpret negative absorptions in ATR-FTIR spectra?

I am wondering why do I get negatve absorptions when taking an ATR-FTIR scan of epoxy resins. Please see the file attached. I know that the negative peak at ~2400 cm-1 is attributed to CO2 and can...

07 July 2016 9,861 18 View

What's an advantege of using monofunctional POSS as a reinforcement in epoxies over multifunctional POSS?

Varius articles report that mono functional POSS tends to agglomerate, and better dispertion is achieved by using POSS with eigth reactive functional groups such as that one:...

04 April 2016 6,932 2 View

What does it exactly mean 'plasma temperature'?

Is it an electron temperature, because it's higher than the temperature of either ions or neutrals? For example, if I would like to calculate the mean speed of particles (Maxwellian distribution)...

12 December 2014 8,002 6 View