CTD 261 Lecture 13: Chapter 8 continued

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

Document Summary

Stress is induced because some of the long molecules are stretched a bit too much. The bond angles are pulled more than they are comfortable. Depending on how much the polymers are drawn and on heat setting which follows nylon can be 50~80% crystalline. It orders the polymer chains, straightens them out. Molecules rearrange to more comfortable positions, crystallites form. The stressed long molecules can move a little bit, rearrange a little bit. They move into better arrangement relative to each other and therefore form crystallites. Heat-setting also is used in yarn texturizing, making shapes permanent. Nylon is manufactured for apparel, carpet, industrial, and tire cord end uses. Tire cord nylon has a tenacity of over 10g/den with an elongation of less than. Nylo(cid:374) do(cid:373)i(cid:374)ates wo(cid:373)e(cid:374)"s hosiery, li(cid:374)gerie, a(cid:374)d carpet (cid:373)arkets. Cordura, 160 deniers and 330 deniers hiking and active wear. Nylon is used in over 55% of all of the u. s. carpet produced.