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APRL145 Textiles

Ch. 7: Manufactured Regenerated Fibers

Laura Oliver

on 4 October 2012

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Transcript of APRL145 Textiles

To understand the processes used to produce manufactured regenerated fibers
To know the properties of rayon, lyocell, acetate, and other regenerated fibers
To relate fiber properties to end uses for rayon, lyocell, acetate, and other regenerated fibers Ch. 7: Manufactured Regenerated Fibers Manufactured Regenrated Fibers From naturally occuring polymers

Not originally in fiber form

Cellulosic: Rayon, Lyocell, and Acetate

Protein: Azlon Rayon Lyocell Acetate Other Regenerated Fibers Identification Production Physical Structure Wet Spun Naturally bright

Serrated Cross Section

HWM/Modal Rayon: rounder cross section Properties Aesthetics: fluid drape
Durability: regular
Comfort: high regain
Appearance retnetion: regular
Care: regular
Identification: burns readily and striations Modifications StapleSolution dyed
Acid dyeable
Cross sections & sizes
High tenacity
Optically brightened
Flame retardant
High absorbency Production Physical Structure Properties Environmental Concerns Wet Spun - recycle solvent Filament and staple

Rounded cross section Aesthetics: dependant on end use

Durability: strong, weaker when wet

Comfort: good, soft hand

Appearance retnetion: moderate dimensional stability

Care: wash or dry clean

Identification: resistant to organic solvents

Most cotton-like Wood pulp from eucalyptus tree farms

Solvent recoverd and recycled

Others, similar to Rayon Properties Aesthetics: dependant on end use

Durability: weak, especially when wet

Comfort: smooth, low regain, static build-up

Appearance retnetion: poor resiliency, wrinkles

Care: dry clean, heat sensitive

Identification: slight striations

Environment: resistant to moths, mildew, and bacteria Production Physical Structure Environmental Concerns Dry spun

First thermoplastic fiber Filament and staple

Lobular cross section

Can be modified Tree harvest
Processing of wood pulp
Solvent reclaimed & reused
Dry cleaning Regenerated Cellulosics
Seaweed Fiber
Rice straw, Prarie Grass, Corn husks

Regenerated Protein
Soy Silk
Silk Latte Microscope: striations

Burn test
Rayon and lyocell: similar to natural cellulosics

Acetate: melts and burns
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