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The surface segregation of a fluorochemical additive from a polyolefin host matrix has been investigated by X-ray photoelectron spectroscopy, optical microscopy, tapping mode atomic force microscopy, imaging time-of-flight secondary ion mass spectrometry, and contact angle analysis. The level of surface enrichment has been found to be governed by the temperature and duration of annealing.
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Ebbens et al. (2001) studied this question.
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