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Micromechanical Processes in PET/PC Multilayered Tapes: High Voltage Electron Microscopy Investigations
Author(s) -
Ivan'kova Elena M.,
Michler Goerg H.,
Hiltner Anne,
Baer Eric
Publication year - 2004
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200400051
Subject(s) - materials science , annealing (glass) , composite material , crystallization , scanning electron microscope , electron microscope , high voltage , voltage , optics , chemical engineering , physics , engineering , quantum mechanics
Summary: A totally new kind of multilayered tape consisting of two macroscopically ductile polymers (PET and PC) was studied using high voltage electron microscopy (HVEM). Both components were co‐extruded as uniform laminates with thousands of alternating layers. The multilayered PET/PC samples were annealed at high temperature. Investigation of the multilayered PET/PC tapes with various compositions clearly demonstrated a transition of the microdeformation mechanism which was dependent on the thickness of the individual layers. The annealing of the tapes led to a significant change in the deformation behavior. However, no lamellae formation was revealed in the PET phase after annealing, leading to the assumption of constrained crystallization in very thin PET layers.