Polycaprolactone fiber

September 24, 2021

Polycaprolactone is a hydrophobic, highly crystalline polymer with good water stability, and an aliphatic polyester obtained by ring-opening polymerization of a caprolactone cyclic monomer catalyzed by an organometallic compound. Polycaprolactone fiber can be produced by melt spinning monofilament, multifilament and staple fiber, and is a kind of biodegradable synthetic fiber with lower price. Since polycaprolactone has a melting point of about 60°C, a glass transition temperature of -60°, and a crystallization temperature of 22°C, it is very close to room temperature, so that it is much more difficult to melt-spin from nylon and polyester. However, by optimizing the process and delaying its crystallization, the tensile properties of the primary fiber can be improved.

Polycaprolactone fiber has high strength and close to nylon 6, its tensile strength can reach 70.56cN/tex or more, nodule strength is above 44.1cN/tex, and its wet strength decreases less. Its biodegradable properties are better. Similar to artificial regenerated fibers, it not only degrades in soil, but also has better degradability in seawater and activated sludge.

Polycaprolactone fiber has good textile processing and use, and is often used in the fields of clothing, daily necessities, civil engineering, medical and health, agriculture, forestry, horticulture, and aquatic products.

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