in polymer chemistry
Penetration of monomeric, oligomeric, or polymeric liquids into an assembly of fibres.
  1. The term as defined here is specific to polymer science. An alternative definition of 'impregnation' applies in some other fields of chemistry.
  2. Impregnation is usually carried out on a woven fabric or a yarn.
PAC, 2004, 76, 1985. 'Definition of terms related to polymer blends, composites, and multiphase polymeric materials (IUPAC Recommendations 2004)' on page 1991 (