Abstract
A ‘double-lamella’ morphology has been observed during a study of molecular segregation and nucleation of low-molecular-mass fractions of poly(ethylene oxide) (PEO) from the melt. It is only observed in cases of crystals with an odd number of folds per molecule. The formation of the double lamellae is thought to be based on association of the OH end-groups of the PEO chains. Ordered hydrogen bonding on facing folded crystals is being suggested as an explanation for the observation.
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