Atomic force microscopy images taken during the crystallization of polyethylene both from processed andquiescent melts are presented. Crystallization from processed melts provides further evidence of a region in front of agrowing lamella that is influenced by the crystallization process
but extending only 40 nm into the melt. High-resolutionimages of the growing crystal tip
taken during crystallization
show no direct evidence of the existence of intermediatephases. The growing tip is shown to be slightly rounded.In-filling crystallization
occurring after the initial flush of growth
is imaged in polyethylene for the first time
and shown to continue to a temperature 8℃ below the initial crystallization temperature.
Abstract
Atomic force microscopy images taken during the crystallization of polyethylene both from processed andquiescent melts are presented. Crystallization from processed melts provides further evidence of a region in front of agrowing lamella that is influenced by the crystallization process
but extending only 40 nm into the melt. High-resolutionimages of the growing crystal tip
taken during crystallization
show no direct evidence of the existence of intermediatephases. The growing tip is shown to be slightly rounded.In-filling crystallization
occurring after the initial flush of growth
is imaged in polyethylene for the first time
and shown to continue to a temperature 8℃ below the initial crystallization temperature.
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