This is a sample mohair from the sample-set provided by Textile Fabric Consultants, Inc.
Transmitted 20 Degrees Off Crossed Linear Polarized Light
Mohair is from the Angora goat. Originally from Turkey it is now breed world-wide. It is classified as a wool but can be
distiguished from sheep wool microscopically.
Significance in the Environment:
Mohair has a refractive index along its length of about 1.56 and perpendicular to its length of about 1.55.
It has a birefringence of about 0.01 and a positive sign of elongation. The cuticle pattern is much finer than in sheep hair
and barely overlaps. It is an irregular waved mosaic. The number of scales per 100 micrometers is about 5 compared to the
9 to 11 for sheep hair. Mohair tends to have a very circular cross-section and most of the fibers have no visible medulla.
When the medulla is present it tends to be unbroken.
Von Bergen, Werner, WOOL HANDBOOK: VOLUME ONE, Interscience Publishers, pp. 315-342, 1963