Biomaterials Surface Chemistry (wk. 4)

Surface Energy

water surface energy

Surface phenomena rule:
minimization of E (Surface free energy)

Surface Phenomena
(3 types)

surface reconstruction types
(2)

Surface reactions
(3)

Absorption

Absorbate

Absorbent

Adsorption

Absorption phenomena: Principle 1

Detergent mechanism

Physisorption

Chemisorption

physisorption, chemisorption and temperature

Absorption phenomena

-OH
-CH3

which is hydrophillic, hydrophobiic, polar or nonpolar

Metal oxidation steps

Metal oxidation reaction

passivation

Galvanic Corrosion

Stainless steel

Corrosion reaction

corrosion

aqueous corrsion

Chemisorption Oxide reactions