POLYMERIC ALLOY OF COIL-LIKE HETEROCYCLIC POLYMER AND ROD-LIKE AROMATIC HETEROCYCLIC POLYMER

摘要

The invention relates to polymeric alloys of rodlike and coil-like aromatic heterocyclic polymers useful for the fabrication of high strength load bearing structural components. In one aspect of the invention, rodlike aromatic heterocyclic polymers are used as reinforcement in coil-like heterocyclic polymer matrices to provide composites at the molecular level that are analogous to chopped fiber composites. A representative example of the coil-like heterocyclic polymer consists essentially of repeating units having the following structural formulas: _ or wherein X is NR, N? , O or S, where ? is phenly, Ar' in or , and m is an integer having a value such that the polymer has an intrinsic viscosity of about 2 to 20 dl/g as determined in methanesulfonic acid at 30.degree.C, and a representative example of the rod-like aromatic heterocyclic polymer consists essentially of repeating units having the following structural formulas: or wherein X is NR, N? , 0 or S, where ? is phenyl, Ar is and n is an integer having a value such that the polymer has an intrinsic viscosity of about 5 to 30 dl/g as determined in methanesulfonic acid at 30.degree.C.