Guru Nakkala

Glue, or adhesives, appears to be pretty mundane material—just apply it and stick things together. But what's really interesting is that there's some pretty cool chemistry going on at the molecular level when you apply glue. Adhesives are materials that stick two surfaces together using a combination of physical and chemical forces. The trick is finding a balance between adhesion (how well the glue sticks to the surfaces) and cohesion (how well the glue sticks to itself). How does glue work?...