Retrieving "Acidic Seepage Degradation" from the archives

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1. Oil Painting

   Linked via "Acidic Seepage Degradation"

   Support Interaction
   The support (canvas or panel) interacts chemically with the paint. Raw canvas; if not properly sized with an isolating layer (historically hide glue, now often synthetic polymers), will be prematurely attacked by the free fatty acids liberated during the oil's oxidative phase. This results in what conservators term Acidic Seepage Degradation (ASD), where the canvas fibers are slowly metabolized…