High Performance Polymers: Matrix Resins, High Strength Polyquinoxalines and Conducting Polyaromatics.

The synthesis of low molecular weight polyquinolines and polyimides containing biphenylene end-caps, with and without acetylenic units in the main chain, were synthesized and evaluated as matrix resins for fiber reinforced composites. The best composite properties were obtained with an exact equivalent biphenylene groups and acetylenic groups, since these groups generate crosslinks by the formation of phenanthrene units. Keywords Polyquinolines, Polyimides, Matrix Resins, Composites, Rigid-rod Polymers, Polyp-phenylene, Conducting Polymers, and Quinolines.