Low-molecular-weight materials on corona-treated polypropylene
- 1 January 1989
- journal article
- Published by Informa UK Limited in Journal of Adhesion Science and Technology
- Vol. 3 (1), 321-335
- https://doi.org/10.1163/156856189x00245
Abstract
—ESCA, wettability measurements, SEM, weight-loss determinations, and an ink adhesion test were used to characterize low-molecular-weight oxidized materials (LMWOM) formed during the corona-discharge treatment of polypropylene film. Water-soluble LMWOM is readily formed by scission processes occurring during corona treatment. The presence of water-soluble LMWOM complicates the interpretation of wettability-based measurements of corona effectiveness. Surface roughening on corona-treated polypropylene is caused by the interaction of LMWOM and water in a high-relative-humidity environment. LMWOM does not necessarily form a weak boundary layer that hinders subsequent adhesion of ink to the corona-treated film.Keywords
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