Infrared Imaging of Cotton Fabric Chemical Treatments Using a Focal Plane Array Detector

Infrared (IR) imaging is gaining attention as a technique used in the examination of cotton fibers and its products. This type of imaging combines infrared spectral analysis with spatial resolution to create visual images that examine sample composition and distribution. An IR macro sampling chamber equipped with a focal plane array detector (FPA) and a single reflectance accessory was employed to examine cotton fabrics treated with non-durable chemical finishes. Three treatments will be discussed in the talk, a phosphazene-based fire retardant, an insect repellent, and deuterated water. IR images of the treated fabrics provide confirmation of fabric chemical treatment and an indication of the treatment uniformity.