Chemical and Biomolecular Engineering Research and Publications
Title
Polycrystalline conducting polymers and precursors thereof having adjustable morphology and physical properties
Document Type
Article
Date of this Version
August 1999
Polycrystalline materials containing crystallies of precursors to electrically conductive polymers and electrically conductive polymers are described which have an adjustable high degree of crystallinity. The intersticial regions between the crystallites contains amorphous material containing precursors to electrically conductive polymers and/or electrically conductive polymers. The degree of crystallinity is achieved by preparing the materials under conditions which provide a high degree of mobility to the polymer molecules permitting them to associate with one another to form a crystalline state. This is preferable achieved by including additives, such as plasticizers and diluents, to the solution from which the polycrystalline material is formed. The morphology of the polycrystalline material is adjustable to modify the properties of the material such as the degree of crystallinity, crystal grain size, glass transition temperature, thermal coefficient of expansion and degree of electrical conductivity. High levels of electrical conductivity are achieved in in the electrically conductive polycrystalline materials without stretch orienting the material. The enhanced electrical conductivity is isotropic as compared to a stretch oriented film which has isotropic electrical conductivity.
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The inventors of this patent are : Angelopoulos; Marie (Cortlandt Manor, NY), Liao; Yun-Hsin (Tarrytown, NY), Saraf; Ravi F. (Lincoln, NE). Any relevant information about this patent can be obtained from the following link of united states patent. United states patent no.5,932,143