Abstract
The casting of copolyether-urethane-urea films onto NaCl crystals led to major disturbances in the copolymer morphology due to the dissolving of the inorganic salt into the polymer casting solution. These disturbances appear to be caused primarily by a salt-urea segment interaction. The urea amide I band at 1635 cm−1 appears to be a sensitive indicator of such changes in these copolymers.
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