Conductive microfibril oriented

The same authors 369,3701 also obtained similar results if the liquid crystal solvent was aligned by flow during the polymerization. They showed that the polymerization conditions lead to alignment of the fibrils within the polymer mass and of the chains within the fibrils polymers produced in this way could also be doped to a conductivity of 104 S cm-1 371). The morphology of polyacetylene produced by polymerization in a liquid crystal solvent, aligned both magnetically and by flow, has been studied by Montaner et al. 371). They show that the polymer film is made up of very long fibrils built from microfibrils. In one fibril, the orientation of microcrystalline domains with respect to the fibril axis is very well defined, whilst the orientation of the different fibrils in the sample spreads over 20°. 

Usually, a composite filled with large specific ratio fibers or flakes has a lower percolation threshold than that filled with spherical conductive particles. The fillers with a high aspect ratio may also increase the tendency to form the co-continuous phases in polymer blend matrices [10]. These morphology-property relationships imply that if the conductive filler is preferential, or even totally localized in the minor phase or its surface (a-polymer) of a polymer blend, and the conductive filler/a-polymer blend is elongated or oriented to form conductive in situ microfibrils in the polymer matrix ([3-polymer), the composite obtained may have high conductivity (construction of 3D conductive in situ microfiber... 

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