Blue Linen From Clothing
Transmitted Off Crossed Circular Polarized Light
Linen is more processed flax fiber. Flax fiber is often a bundle of individual fibers and tends to be more coarse. Linen
tends to be single flax fibers and is much more consistent and finer in fiber diameter.
Significance in the Environment:
This is a common clothing fiber.
Flax and linen have a refractive index along its length of about 1.58 to 1.60 and perpendicular to its length of about 1.52 to 1.53.
They have a birefringence of up to 0.06 and a positive sign of elongation.
DuPont Company Techinical Bulletin X-156: IDENTIFICATION OF FIBERS IN TEXTILE MATERIALS, December 1961.