Abstract
Abstract In the 1980s, one of the developments in high performance fibers was the use of aromatic heterocyclic polymers such as poly(p‐phenylene benzobisthiazole) (PBZT) and poly(p‐phenylene benzoxazole) (PBO). Aromatic polyimides are known for their excellent thermal stability, chemical and solvent resistance, and light stability. Because of these outstanding properties, they are widely used as industrial films, coatings, adhesives, and moldings at high temperatures. In the first part of the article, the synthesis of aromatic polyimides are discussed, describing the one‐step method and the two‐step method. Moreover, a discussion on the basic technology for forming synthetic fibers, which includes spinning and heat treatment under drawing, is presented. In the second part of this article, structure, morphology, and different properties such as color, density, thermal stability, and so on of aromatic polymide fibers are presented.
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