|Fiber||Origin of Material||Characteristics||Advantages||Disadvantages||Suitable Uses|
|Acrylic||Synthetic polymer (acrylonitrile)||Not absorbent, resists sunlight||Inexpensive wool substitute, easily washable||Pills, heat damage||Similar as fine wools, except for felting|
|EcoSpun||Synthetic polymer (polyethylene terephthalate)||Moisture-wicking, not absorbent||Uses post-consumer recycled PET containers||As polyester||Any as polyester, popular for fleece fabrics|
|Lurex||Aluminum coated plastic filament||Reflective colored film, not absorbent||Unique visual effect||Melts easily||Specialty accent|
|Lyocell||Remanufactured cellulose from wood pulp||Lustrous, absorbent||More environmentally friendly manufacture than rayon, soft, resists wrinkles||More expensive than rayon||Any as rayon|
|Metallic||Metals (various kinds) usually with a film or fiber base||Lustrous, not absorbent, some are reflective||Unique visual effect||May tarnish, often expensive, heavy if thick, fragile if thin||Speciality accent|
|Nylon||Synthetic polymer (coal-based)||Elastic, abrasion resistant, not absorbent||Fast to dry, strong||Prone to static, sunlight damage||Lightweight fabrics to canvas, industrial applications|
|Polyester||Synthetic polymer (various kinds)||Not absorbent||Easily washable, inexpensive||Holds greasy stains, dyes poorly||General purpose, garments to industrial applications|
|Rayon||Remanufactured cellulose from wood pulp||Lustrous, absorbent||Soft, inexpensive||Wrinkles easily||Softly draped garments|
Maximum 192 points
Examiner 1 gave 21 points to nylon and rayon and the full 24 to the rest. The comment for nylon was that it picks up loose dyes easily, I seem to recall I intended to add "dyes easily" to the characteristics but somehow it didn't happen. The comment for rayon is that it is weak when wet and shrinks with washing. Examiner 2 gave 21 points to nylon and polyester and the full 24 to the rest. There was the same dye comment about nylon and a note that polyester is resilient.
Some of these fibers were difficult to research, mostly I was using technical books that contained vast quantities of data. Simple things like characteristics were often buried in pages of discussion of polymer chemistry. Sure, I have a better handle on the terminology than someone not trained as an engineer, but it's still a lot to slog through. Most of the less technical books don't have much to say about fiber properties or talk about them only in vague terms.