FTIR spectroscopy and X‐ray photoelectron spectroscopy (XPS) were applied to examine the slip‐reducing mechanism of polypropylene‐laminated films. The relationship between the slip and the amount of lubricants was established on the basis of quantitative analysis of lubricants on the cast and laminated polypropylene film surfaces. The results suggested that erucic amide used as a lubricant for the cast film migrated from the film surface into the adhesive layer, probably due to intermolecular interactions (hydrogen bonds) with an isocyanurate‐ether‐polyol used as an adhesive for laminating the films. This enabled us to understand the slip‐reducing mechanism in the laminated films.
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Nishioka et al. (1993) studied this question.
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