Scanning force microscopy (SFM) of oriented polyethylene reveals additional structural details that are not accessible by other techniques. For example, the Figure show that, in addition to the main fibrillar features, there exist nanofibrils oriented perpendicular to the stretching direction. The unique contribution of SFM result to studies of the structural hierarchy of oriented polymers is discussed. magnified image
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Wawkuschewski et al. (1994) studied this question.
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