Adhesives are substances that act to create a bond between two surfaces (substrates), in most cases without causing a substantial chemical change to the substrate.

  • Animal glue (often rendered from hides or bones)
  • Casein (a protein found in milk)
  • Lignin (an organic polymer found in woody plants)
  • Resins (a variety have been used as adhesives)
  • Starch (from wheat flour, potatoes, and others — such as the Bletilla tuber, Bletilla striata)
%d bloggers like this: