A polyamide from bisacid A2 and p-phenylenediamine: Synthesis, properties, and fiber formation



The synthesis, characterization, and processing of a new polyamide which is formed from bisacid A2 and p-phenylenediamine are reported. The polymer is synthesized using low-temperature solution polycondensation methods. The conditions for producing high molecular weight polymer are described. The polymer produced is amorphous, but lower molecular weight varieties may be crystallized with a formic acid treatment. Differential scanning calorimetry indicates a transition in the range of 180–190°C. Mechanical properties of films are measured. Fibers have been produced by both melt and wet spinning.