CTD 261 Lecture Notes - Lecture 3: Knitting, Electrical Resistivity And Conductivity, Dry Cleaning

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

Document Summary

Cross-section shape: fiber shape affects luster, bulk, body, texture, hand, etc. Surface contour: describes outer surface of the fiber. Affects luster, hand texture and apparent soiling (how dirt shows up on fabric) Crimp: the three-dimensional shape of the fiber. Fiber crimp: waves and twists along the fiber. Fabric crimp: bend caused by distortion of yarns due to weaving and knitting. Fiber parts: complex for natural fibers; simple for manufactured fibers. Classify and differentiate among generic fibers (fiber fine structure) Polymerization: process of joining many small molecules (monomers) to form one large compound. Degree of polymerization: the number of monomers connected to form polymer. Amorphous: polymer chains arranged in a random, disorganized way, not parallel; fibers are weak, flexible, absorbent; low elastic, but good elongation properties. Crystalline: polymer chains are parallel, affect strength of fiber. Orientation: polymer chains parallel to each other and to the fi(cid:271)er"s lo(cid:374)gitudi(cid:374)al a(cid:454)is; stiff, nonabsorbent; low elongation, good elasticity.