Ali Ansari Hamedani

4 Questions 13 Answers 0 Followers

Questions related from Ali Ansari Hamedani

How to perform 4-point probe measurement for a bad conductor?

Hello I would like to measure electrical conductivity (resistivity) of electrospun fibermat of a polymer. I know that: Knowing the thickness of the fibermat, one should be able to apply it in...

13 August 2018 8,219 2 View

I need to extract solid AIBN from a solution in toulene. Has anyone done that before?

Due to some strange custom regulations!!!, only 0.2 M solution of AIBN in toluene (sigma-aldrich 714887-100ML) can be imported to Turkey and I need to use AIBN in a polymerization with another...

01 October 2016 7,181 2 View

How do I dissolve copolymers containing an alkoxysilane moiety without the risk of gelation?

While making solutions of copolymers containing an alkoxysilane moiety, the only experience that I have had so far has been gelation of the solution (which is undesirable). How could I prevent...

04 January 2016 7,954 2 View

What is the refractive index of Strontium aluminate as a function of wavelength?

There are papers who report refractive index of strontium aluminates and give a single value for it but this is not I would like to have. Is there a Sellmeier like equation for strontium alluminates?

27 October 2014 8,252 5 View