Polyacrylonitrile is widely used in the production of synthetic fibers, particularly in the textile industry, where it is spun into fibers known as acrylic or modacrylic. These fibers are valued for their wool-like qualities, making them suitable for sweaters, blankets, and other warm clothing items. Additionally, polyacrylonitrile serves as a precursor in the manufacture of carbon fibers, which are essential in aerospace, automotive, and sports equipment industries due to their high strength-to-weight ratio. It is also used in filtration systems, where its fibers are employed to create membranes for air and liquid filtration, ensuring high efficiency and durability. In the field of construction, polyacrylonitrile-based materials are utilized for reinforcement in concrete and other composites, enhancing structural integrity. Furthermore, it finds applications in the production of specialty papers, adhesives, and coatings, contributing to their performance and longevity.