Weatherability of biodegradable polybutylene succinate(PBS) monofilaments

Abstract

This study was aimed not only to develop the gill net and trap made of biodegradable monofilaments inorder to prevent a ghost fishing and to protect marine ecosystem, but also to analyze their spinning processand physical properties. Results showed that the spinning speed of biodegradable polybutylenesuccinate(PBS) monofilament was estimated to be approximately 100m/min when spinning temperature andcooling water temperature were adjusted at 180℃ and 3℃, respectively. The breaking loads of PBSmonofilaments were estimated to be 35.3kg/mm2at φ0.2mm, 46.5kg/mm2at φ0.3mm, and 49.7kg/mm2atφ0.4mm in the dry condition, respectively. However, its breaking loads in the wet condition were reduced by2.4－5.5%, compared to those in the dry condition. The knotted strength of PBS monofilament at φ0.2mmwas estimated to be 98.6% of PE in the dry condition. The breaking load of PBS monofilament at φ0.3mmwas evaluated to be 81.8% of PA, and its softness showed 3 times less than that of PA in the wet condition.The breaking load of PBS monofilament at φ0.4mm was 95.3% of PA, and its softness showed 1.6 times lessthan that of PA in the wet state. However, the load elastic elongations of two kinds of monofilaments wereestimated to be 1% higher than that of PA.