Coupling agent

An additive promoting interaction between dissimilar constituents. A compatibiliser has a related role, but the terms are not exact synonyms in every chemistry. Names and abbreviations: interface modifier. Related terms: Polyvinyl chloride (PVC); UV stabiliser. Sources: https://research.fs.usda.gov/download/treesearch/42497.pdf, https://research.fs.usda.gov/treesearch/36721