Which of the following factors affects the flammability of textiles?

The type of fiber used in textiles is a significant factor that affects flammability. Different fibers have varying chemical compositions and properties that determine how they react to heat and flames. For instance, natural fibers like cotton and wool tend to burn differently compared to synthetic fibers such as polyester or nylon. Wool, for example, is known for its natural flame resistance due to its high moisture content and structure. On the other hand, some synthetic fibers can melt and drip when exposed to flames, potentially causing more severe burns.

Understanding the specific characteristics of the fiber helps in evaluating the fire safety of textiles in interior applications. This consideration is crucial for both residential and commercial environments, where fire regulations may dictate the types of materials that can be used.