What synthetic fiber is often used as a replacement for wool?

Acrylic is often used as a synthetic replacement for wool due to its wool-like texture and properties. It was specifically designed to mimic the softness and warmth of wool, making it an appealing choice for various textile applications. Acrylic fibers are lightweight, have good insulation properties, and resist moths and mildew, which enhances their usability in garments and home furnishings that would traditionally be made from wool.

While other fibers like polyester and nylon have their own uses in the textile industry, they do not closely replicate the characteristics of wool. Polyester, for example, is primarily known for its durability, moisture-wicking properties, and wrinkle resistance, making it a popular choice for clothing and home textiles but not specifically as a wool substitute. Similarly, nylon is known for its strength and elasticity, often used in activewear and outdoor gear, rather than as a wool alternative. Rayon, a semi-synthetic fiber, offers softness and a luxurious feel but lacks the warmth and insulation of wool and acrylic. Thus, acrylic stands out as the most suitable synthetic fiber to replace wool in various applications.