The common thing between polyamide and polyester is both are synthetic fibers fall under class man made fibers.
Nylon is commonly known as polyamide. Developed by Dupoint. Polyamide (nylon) is first engineering thermoplastic. It is one of many hetrochain thermoplastics, which as atoms other than C in the chain. It is created when condensation reaction occurs between aminoacids, dibasicacids and diamines.
Polyester is any long chain synthetic polymer, where 85% (of weight) of the polymer is an ester and therphthalic acid. Most polyestr made from polyethylene terephtalate. Properties varies depending on their composition web structuring and processing. Its the inexpensive fiber which brought reveloution in textile industry.
Most likely wool or polyester.
Polyester, a particular polyamide, is a synthetic fibre used from a plethora of organically/naturally found and fabricated chemicals. Virgin Polyester, I believe, is the first iteration of the polyester polyamide before it is recycled and forged for a second, third, and fourth time over, etc., into some other polyester item.
Polyamide has a more organized molecular structure with stronger intermolecular forces, leading to higher strength compared to polyethylene, which has a more random molecular structure with weaker intermolecular forces. Additionally, the presence of amide bonds in polyamide adds to its strength by forming a network of strong covalent bonds.
Some of the most popular fabrics used when making cloth diapers are: Bamboo, fleece (polyester), cotton, hemp, microfibre (75% polyester and 25% polyamide), polyurethane laminate and wool.
Microfibers are made of a blend of polyester and polyamide fibers, combined to produce fabric that is superior for water absorption and cleaning around the home and garage.
Microfiber is typically made of polyester, polyamide, or a blend of both. These synthetic fibers are finely woven to create a fabric that is soft, durable, and highly absorbent.
Leather rope can be stronger than regular woven ropes, such as jute or flax. But synthetic rope (nylon, polyester) has many more fibers than leather, or any natural fiber, and for the same diameter will be much stronger.
Polyamide is usually known as nylon.
Nylon is a polyamide.
In both cases, the "D" stands for the word "denier", which is a measure of the fineness of the material. Specifically, the word refers to the weight (in grams) of 9,000 meters of the fiber from which the material is made. In simpler terms, it means that a higher denier fabric is stronger and more durable than the same type of fabric with a lower denier rating. However, when comparing two different types of fabrics, such as polyester and nylon, it is important to note that because each fabric has different weights, 600D polyester fabric is not equal to 600D nylon fabric in terms of strength. In general, nylon is a stronger fabric type than polyester, and 420D nylon fabric, for example, is actually stronger than 600D polyester
Denier polyester is fabric and the higher the number, the thicker and stronger it is. 210 would be thin like silk.
made from plastic it's made from plastic (poly- as in polyurethene)