Polycaproamide

Polycaproamide

 

[—NH(CH2)5CO—]n, a linear polymer of caprolactam; an aliphatic polyamide. A white, odorless, horny substance. Molecular weight, 10,000–35,000; density, 1.13–1.14 g/cm3 at 20°C; crystallinity, ~ 60 percent; melting point, 225°C.

Polycaproamide is one of the best known polyamides. It is characterized by high wear resistance and mechanical strength —for example, bending strength, ~90 meganewtons per sq m (MN/m2), or ~900 kilograms-force per sq cm (kgf/cm2); impact strength 150–170 kilojoules per sq m, or kgf. cm/cm2. Polycaproamide is chemically stable; it is resistant to most solvents (soluble only in concentrated sulfuric and formic acids and in fluorinated alcohols). It is physiologically harmless and is gradually resolved in the human body. At room temperature and normal humidity, polycaproamide absorbs 2–3 percent moisture (maximum, up to 12 percent).

Polycaproamide is produced industrially by polymerization of the monomer and is processed according to the standard methods for polyamides. Large polycaproamide products requiring no mechanical processing are produced by mold polymerization. Polycaproamide is primarily used in fiber manufacture, as well as in the manufacture of various machine parts. Polycaproamide is manufactured under the trade names Kapron and Kaprolon (USSR), Perlon (Federal Republic of Germany), Dederon (German Democratic Republic), Silon (Czechoslovakia), Amilan (Japan), and Nylon-6, Plaskon, and Caprolan (USA).

REFERENCES

See References under .

V. V. KURASHEV

References in periodicals archive ?
The GMA grafted structures were obtained by "grafting from" multifunctional polyethylene and polycaproamide fibers (21), (22).
Maintaining that these processes are responsible for the existence of life on this planet, these scientists examine the stabilization and modifications heterochain polymers such as polycaproamide, cellulose diacetate and polyethylene terphithalate.
The three chapters address the stabilization and modification of cellulose diacetate, polycaproamide, and polyethylenerephthalate.