Slgirim Lee

4 Questions 1 Answers 0 Followers

Questions related from Slgirim Lee

Why should we cool down the solution before adding EDC/DCC when we do Steglich reactions?

Hi, I'm relatively new to this coupling reactions so studying details of the reactions. I just wonder why we need to cool down the mixture of DMAP/carboxylic acid/alcohol or amines to zero...

19 August 2022 5,600 0 View

Can anyone help with finding good solvent for polystyrene and bad solvent for PLGA?

I'm trying to selectively dissolve polystyrene from polystyrene/PLGA. When I did that with polystyrene/PCL, I used chilled DMF and it worked very well, PS and PLGA share too many solvents. Please...

04 September 2015 8,056 1 View

Why do moduli increase with frequency in gels above certain frequency?

I work on polymer gels and composites. When I did frequency sweep on my samples (particles in hydrogels), interestingly, the G' and G" increased with frequency after certain frequency. So, the...

15 August 2015 8,836 2 View

Any idea about cytochemical staining of inflammatory cells?

Hi I'm trying to stain the inflammatory cells or immune cells (both or either is okay) from in vivo tissue sections. I implanted the polymeric scaffolds (polycaprolactone, PCL) into rats. From...

06 July 2015 5,318 3 View