Question

Question about PTFE for a lab

Answer 1

We measured the contact angles made when droplets of liquids are placed onto different surfaces

I noticed that deionized water had the smallest contact angle (60 degrees) with PTFE (teflon) indicating strong interactions between the water and the surface - is this normal? Isn't PTFE nonpolar?

Answer 2

@JustSaiyan

Answer 3

I never got this notification. ***. ;-; Give me.....a couple minutes to answer.

Answer 4

Yes this is normal. Teflon is a non-polar molecule. Therefore, it cannot have dipole-dipole or hydrogen bonding acting upon it's molecular structure. The negative fluorine from the (C2F4)n is attracted to the positive hydrogen in the H2O. This is because dispersion involves slightly positive and slightly negative.

Answer 5

Does this help?