HUEC 2040 Chapter : Chapter 7
Document Summary
Count hilaire de chardonnet created first factory, tried to make it like silk. 1924- named rayon: a manufactured fiber composed of regenerated cellulose, rayon groups, viscose rayon, largest group made today, cuprammonium rayon, do not produced in us, 1926, high-tenacity rayon, 1950s, make it stronger, high-wet-modulus (hwm) rayon. Lower ironing temperature: chlorine bleach-deteriorates, perborarate bleaches-safer, cuprammonium rayon. 1996-1st new generic fiber solvent spinning fiber a lot of research to make a usable product: manufacture, wood pulp, more degradative steps omitted, self-contained process, non-toxic solvent. Fiber formation: converted to luquid form, extruded through spinneret, drawing or stretching. Popcorn : striations luster & color, clear, white, high luster, bright, delustered. White with black spots specific gravity lower-rayon and cotton: excellent drapability and softness imitates silk strength, very low, poor abrasion resistance, no pilling, elasticity & resilience, acetate- poor. Delustered: more sensitive fume or pollution fading atmospheric fading, age. Lauder- dry clean: wrinkles, creased/folded- wet, bleaching, perborate bleach, hydrogen peroxide.
