Structure Polymerization: condensation, eliminating a H2O molecule Functional group: amide group Molecular configuration: linear zigzag molecules forming well closely packed pleated sheets IMF. H-bond Crystallinity: High 65-86%0 Cross-sectional and longitudinal shape: can be any thi
Structure • Polymerization: condensation, eliminating a H2O molecule • Functional group: amide group • Molecular configuration: linear zigzag molecules forming well closely packed pleated sheets • IMF: H-bond • Crystallinity: High 65~86% • Cross-sectional and longitudinal shape: can be any thing
Properties Tenacity: high due to high orientation and crystallinity Elongation: high due to zigzag structure Recovery: high due to zigzag Energy of rupture: high due to high tenacity and high elongation: one of the toughest materials Flexibility: high due to zigzag Abrasion resistance: high Water absorption: highest among all synthetic fibers
Properties • Tenacity: high due to high orientation and crystallinity • Elongation: high due to zigzag structure • Recovery: high due to zigzag • Energy of rupture: high due to high tenacity and high elongation: one of the toughest materials • Flexibility: high due to zigzag • Abrasion resistance: high • Water absorption: highest among all synthetic fibers
Properties Smooth round cross-section and uniformity permit close packing Swells when absorbing moisture Static: not enough water absorption Low specific gravity: 1. 14g/cc Resilience: high: wrinkle free Can be laundered but not easy to clean Vulnerable to degradation in acids low resistance to sunlight melts and drips
Properties • Smooth round cross-section and uniformity permit close packing • Swells when absorbing moisture • Static: not enough water absorption • Low specific gravity: 1.14g/cc • Resilience: high: wrinkle free • Can be laundered but not easy to clean • Vulnerable to degradation in acids • low resistance to sunlight • melts and drips