Glossary

Resistance of material to flow under stress.

The steam-volatile fatty acids present in natural latex consisting, essentially, of formic, acetic and propionic acids. These are measured by the volatile fatty acid (VFA) test.

Irreversible process during which a rubber compound becomes less plastic, more resistant to swelling by organic liquids and elastic properties are conferred, improved, or extended over a greater range of temperature through change in its chemical structure.

Any material that can produce in rubber the change in physical properties known as vulcanization, such as sulphur, polysulfides, organic polynitro derivatives and peroxides.