Degradation Analysis of Polyamide 6 Monofilament Fibers Coated with Thermoplastic Polyurethane Thin Films

Baiju John; Mutsuhisa Furukawa

doi:10.56093/ft.v50i2.29151

Authors

Baiju John Sealy Centre for Biochemistry and Molecular Biophysics, University of Texas Medical Branch
Mutsuhisa Furukawa Department of Material Science and Engineering, Graduate School of Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521

https://doi.org/10.56093/ft.v50i2.29151

Keywords:

Polyamide 6 monofilament fiber, ther- moplastic polyurethane, accelerated weathering, sliding wear, thin film coating

Abstract

Degradation studies were conducted on high performance polyamide (PA) 6 monofilament fibers prepared with various types of thermoplastic thin film coatings. Polyether, polyester and polycarbon- ate based polyurethane thin film coatings were used with changes in the molecular weight of the polyols and NCO index. It was found that the thermoplastic coating significantly protected the core PA6 monofila- ment fibers from degradation, analyzed through sliding abrasive wear and accelerated weathering irrespective of the type and nature of the thermo- plastic polyurethane (TPU) thin film coating. The structural and physical changes were analyzed after exposure to degradation tests. Polycarbonate based TPU thin film coated PA6 monofilament fibers showed significant resistance towards degradation factors as compared to the polyether and polyester based TPU thin film coatings. The TPU thin film coated PA6 monofilament fibers are potential candidates as material for fishing gears.