​​What is the difference between Superglue and normal PVA?

Superglue and PVA glue both use polymerization for adhesion. Polymerization is a chemical reaction, where the sharing of electrons allows some types of molecule to join together, forming long chains called polymers. 

Superglue contains a compound called ethyl 2-cyanoacrylate, which reacts with water to cure (i.e. turn from a liquid into a solid). Usually there is a very thin layer of water present on most surfaces – condensed water vapors from the air – making superglue effective on almost any type of surface. 



PVA (polyvinyl acetate) glue is water-based, and is commonly used for sticking wood together. Water in PVA intertwines the fibers of wood with the polyvinyl acetate, eventually evaporating and leaving behind a bond stronger than the material itself.

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