米 Chapter1 Silk Fibers Yiping Qiu
Chapter 11 Silk Fibers Yiping Qiu
Introduction The larva of certain insects for use in their building webs, climbing ropes and cocoons riders Commercial silk industry: use larva of silkworm Application Mostly apparel, was also used for parachutes
Introduction The larva of certain insects for use in their building webs, climbing ropes and cocoons Spiders Commercial silk industry: use larva of silkworm Application: Mostly apparel, was also used for parachutes
米 Structure Macrostructure Length: 1000-1300 yds(915-1190 m)/cocoon Max 3000yds(2750m)/cocoon, 1 fiber/cocoon Thickness 9-11 um or 1.2-1.5 denier Varies: thickest in the middle thinnest inside(maybe running out of raw material, or maybe just make itself comfortable)
Structure Macrostructure: Length: 1000-1300 yds (915-1190 m)/cocoon Max 3000yds (2750m)/cocoon, 1 fiber/cocoon. Thickness: 9-11 mm or 1.2-1.5 denier. Varies: thickest in the middle thinnest inside (maybe running out of raw material, or maybe just make itself comfortable)
米 Structure Microstructure cross-Section: 2 triangular filaments co extruded by a worm The two are called brins held together by sericin(gum or silk glue Wild silk worms produce ribbon-like silk fibers
Structure Microstructure cross-section: 2 triangular filaments coextruded by a worm. The two are called brins held together by sericin (gum or silk glue). Wild silk worms produce ribbon-like silk fibers
米 Structure Submicrostructure Silk from cultivated worm: no identifiable submicrostructure Wild silk or tussah silk has internal fibrillar structure
Structure Submicrostructure Silk from cultivated worm: no identifiable submicrostructure. Wild silk or Tussah silk has internal fibrillar structure