The Flammability of Polyester-Cotton Mixtures

Abstract
Polyester-cotton blended fabrics have the reputation of being “difficult to flame retard.” Treatments developed for flame retarding 100% polyester or 100% cotton fabrics do not seem to have the same effect when the two fibers are combined. Quantitative data are presented which pinpoint how the flammability behavior of polyester-cotton blends differs from that of the components. Physical and chemical aspects of pre-ignition and post-ignition phenomena are discussed for mixtures in which one or both of the polymers has been flame retarded, as well as for untreated combinations.

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