Rayon Physical & Chemical Properties

(A Cellulosic Man-Made Fiber)
Composition Regenerated cellulose

Physical Properties
Microscopic Appearance
– Striations seen in viscose and high-strength rayon
– If DE lustered, scattered specks of pigment can be seen.

Length
– Filament and staple Color
– Transparent unless dulled by pigments

Luster
– High unless DE lustering pigment added

Strength
– Fair to excellent
– Regular rayon has fair strength
– High tenacity types have well to excellent strength

Elasticity
– Regular rayon is low
– High strength rayon is good

Resiliency
– High wet-strength rayon is better

Moisture Absorption
– Higher than natural cellulose
– Fibers swell in water
– Weaker when wet

Heat
– Loses strength above 300′ F
– Decomposes between 350 and 400′ F

Flammability
– Burns rapidly unless treated

Electrical Conductivity
– Fair and static charge can be reduced with special finishes
Specific Gravity – 1.52 (similar to cotton)