- #1
rexol
- 13
- 0
Consider comparasion between same states and same type of materials. also consider the substrates to have same surface quality.
a substance with higher cohesive force would have a higher surface energy. this should be because of the stronger cohesive forces between molecules as the molecule on topmost layer is unsatisfied, now if we consider water & say mercury , Hg has a higher surface energy. so it will not wet the surface ?
So will it be a good adherent?
Also, can we generalise that higher surface energy is only for obtuse contact angles? Is there an exception?
a substance with higher cohesive force would have a higher surface energy. this should be because of the stronger cohesive forces between molecules as the molecule on topmost layer is unsatisfied, now if we consider water & say mercury , Hg has a higher surface energy. so it will not wet the surface ?
So will it be a good adherent?
Also, can we generalise that higher surface energy is only for obtuse contact angles? Is there an exception?