CTD 215 Lecture Notes - Lecture 8: Synthetic Fiber, Melt Spinning, Aramid

• School: University of Alabama
• Department: Clothing, Textiles and Interior Design
• Course: CTD 215
• Professor: Dr.Thompson

Document Summary

Synthetic fibers: differ from manufactured, synthetic fibers: synthesized from chemicals or from petroleum products, produced by condensation or addition polymerization. Addition: double bonds between 2 c atoms are broken, reforms a single bond connecting two monomers. Common properties synthetics: heat sensitive, chemically resistant, hydrophobic, oleophilic, static, to id: solubility only reliable test. Common properties: slick and abrasion resistant, strong, resistant to most common fiber degradants: sunlight (except for nylon, flame resistance varies widely, non-biodegradable. Common manufacturing processes: melt spun, drawn: to develop strength, pliability, toughness, and elasticity properties, heat set: to stabilize yarns or fabrics. Nylon: nylon was the first wholly (cid:498)synthetic(cid:499) fiber to be produced petroleum; the polymers are not found in nature, starting materials are polymers manufactured from chemicals derived from. Nylon 6,6 polymerization: number after nylon indicates the number of carbon atoms in the starting materials. Spinning: polymers are melted; stabilizers and white pigment may be added to the melt. Drawing: aligns the molecules but induces stress.