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Natural fiber

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Keys

-denier is weight in gram per 9000 m of fiber (1tex=9den)

-high denier->thick fiber, high GSM->thick textile

-1 denier of PES monofilament has 10 um diameter

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Animal-keratin polymer

Wool

Silk

Cashemere

Leather

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2500 silkworms to produce 1 pound silk(0.4536kg)

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Protein

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Keratin

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Keratin

Silk

Nylon 6,6

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Vegetable-Glucose polymer

Cotton

Linen

Sisal

Hemp

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Cotton

PES

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Quality of cotton fiber

Spinning + Carding, combing

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Regenerated cellulose

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Cotton vs rayon

Mw = 5000

Mw = 400~

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Cotton

Rayon process is easy to make cellulose to acetate

acetate

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Natural fiber

(plant base)

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MMCF

Manmade cellulose fiber

FSC

Forest Stewardship Council

PEFC

Programme for the Endorsement of Forest Certification

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