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

摘要

ABSTRACTThe invention relates to polymeric alloys of rod-like and coil-like aromatic heterocyclic polymers usefulfor the fabrication of high strength load bearing struc-tural components. In one aspect of the invention, rod-like aromatic heterocyclic polymers are used as reinforce-ment in coil-like heterocyclic polymer matrices to pro-vide composites at the molecular level that are analogousto chopped fiber composites. A representative example ofthe coil-like heterocyclic polymer consists essentiallyof repeating units having the following structuralformulas: _ or- 18 -wherein X is NR, N? , O or S, where ? is phenly, Ar' inor , and m is an integer having a valuesuch that the polymer has an intrinsic viscosity ofabout 2 to 20 dl/g as determined in methanesulfonic acidat 30°C, and a representative example of the rod-likearomatic heterocyclic polymer consists essentially ofrepeating units having the following structural formulas: orwherein X is NR, N? , 0 or S, where ? is phenyl, Ar is and n is an integerhaving a value such that the polymer has an intrinsicviscosity of about 5 to 30 dl/g as determined in methane-sulfonic acid at 30°C.