Epitaxial growth of the perfectly alternating ethylene-carbon monoxide
copolymer (POK) has been successfully achieved using hydroquinone, fi
rst as a solvent in its liquid state, and then as a substrate in its c
rystallized form. Mono-oriented POK domains grow directly in the alpha
crystal form. The polymer chain axis lies parallel to the substrate s
urface and each domain is composed of a stack of lamellae standing edg
ewise; the contact plane with the substrate is the crystallographicall
y dense (100) plane.