Mahmoud Gomaa

3 Questions 3 Answers 0 Followers

Questions related from Mahmoud Gomaa

What is the diffrence between sweeling ratio and water uptake for polymer?? and how to determine both of them ?

As we know that , water molecules start to fill the free volume of the polymer, after the free volume is completely filled with water then it will increase the size and the lead to swelling...

07 July 2018 577 2 View

What is the easiest way which give an accurate results to measure the permeability of gases through polymer materials ?

gas permeability is very important property for polymer materials which used as proton exchange membrane for fuel cell

01 January 2018 289 0 View

What is the difference between stopping power and mass stopping power?

Why is the mass stopping power of water higher than that of lead?

11 November 2013 2,215 7 View