What is the acrylic and polyacrylic fiber?

Acrylic fiber is a synthetic fiber made from polymerized acrylonitrile, known for its lightweight, warmth, and resistance to moths and mildew. It is often used as a substitute for wool in clothing and textiles. Polyacrylic fiber refers to fibers derived from polyacrylonitrile, a type of acrylic polymer, which can also exhibit similar properties, including durability and color retention. Both types of fibers are commonly used in apparel, upholstery, and various industrial applications.