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A polyamide is a polymer with repeating units linked by amide bonds. [1] Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk. Artificially made polyamides can be made through step-growth polymerization or solid-phase synthesis yielding materials such as nylons, aramids ...
Synthesis and manufacturing. Applications. See also. References. Nylon 66 (loosely written nylon 6-6, nylon 6/6, nylon 6,6, or nylon 6:6) is a type of polyamide or nylon. It, and nylon 6, are the two most common for textile and plastic industries.
Polyimide (sometimes abbreviated PI) is a polymer containing imide groups belonging to the class of high-performance plastics. With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, such as high temperature fuel cells, displays, and various military roles.
Nylon is a family of synthetic polymers with amide backbones, usually linking aliphatic or semi-aromatic groups. Nylons are white or colorless [1] [2] and soft; some are silk -like. [3] They are thermoplastic, which means that they can be melt-processed into fibers, films, and diverse shapes.
Cast polyamide, usually of the polyamide 6 type, is also known as cast nylon 6 or PA 6 C. Cast nylon is a high molecular weight, highly crystalline polymer. Cast nylon type 6 is produced by a casting process, whereby the raw material caprolactam polymerises through a controlled chemical reaction.
Aug 5, 2004 · Structures and morphologies of cast and plastically strained polyamide 6 films as evidenced by confocal Raman microspectroscopy and atomic force microscopy - ScienceDirect. Abstract. References (52) Cited by (38) Polymer. Volume 45, Issue 17, 5 August 2004, Pages 6013-6026.
However, some polyamides — including the cast versions typically used in industrial operations — are designed specifically to resist water absorption. Polyamide can also sometimes shrink when cast.
