Polyester contains ester linkages in every repeat unit of main chain. Most common type is polyethylene terephthalate (PET). Natural and some synthetic polyesters are biodegradable. Synthetic fibers have higher water, wind and environmental resistance
Polyamide (PA) is a synthetic polymer containing amide groups. Developed by DuPont in 1939, industrialized in 1950s. Features excellent mechanical properties, heat resistance, and self-lubrication. Available in various types including PA 6, PA 66, PA 11, PA 12, PA 46
Powder coating was developed by Dr. Erwin Gemmer in Germany in 1953. It is a micron-sized coating made of solid materials without solvents. Started being used in Turkey in the 1980s
Both are synthetic fabrics made from petroleum and water. Polyester was invented in 1941, polyamide in 1938. Polyester fibers are tightly woven, polyamide has different weave pattern
Polyester fiber contains at least 85% ester of dihydric alcohol and terephthalic acid. Most widely used polyester is polyethylene terephthalate (PET). Contains aliphatic and aromatic parts in macromolecular chains
Astolfo is the hero character from Fate Grand game. Character is male but more feminine in appearance. Costume includes dress, shoulder piece, waistcloth, and accessories