CTD 261 Lecture Notes - Lecture 7: Angora Goat, Dry Cleaning, Arthropod Cuticle

• School: University of Alabama
• Department: Clothing, Textiles and Interior Design
• Course: CTD 261
• Professor: Amanda Thompson

Document Summary

Not as strong as cotton or flax. Has high elongation and good elastic recovery and resilience. The disulfide cross links act as ties to link the coiled chains together. When molecules are stressed and stretched, they will recover and pull back to their original shape because disulfide bonds want to return to their original unstressed configuration. Most absorbent of all the natural fibers. Wool gives off heat as it absorbs water. Can be shaped by heat and moisture. Hydrogen bonds broken and reformed with steam pressing. Wool fibers are round in cross section with scales on the surface. The chemistry of each half of a wool fiber is slightly different. They differ in the amount of sulfur-containing amino acid, cystine. As a result, the two sides are slightly different in chemical and physical behavior, one result is crimp. Scales point towards tip of fiber, away from root.