02397nam a2200301Ia 4500003001000000005001700010040000900027245013200036490005900168520143500227650001801662650002701680650001201707650001201719650000801731650000901739650002001748650001901768700001101787700001701798700002001815700001901835700001301854700001601867700001701883856015401900008004102054MX-MdCICY20260521091752.0  cCICY10aEnvironmental Degradation of nylon, poly (ethylene terephthalate)(PET), and poly (vinylidene fluoride)(PVDF)fishing line fibers0 vACS Applied Polymer Materials, 5(6), p.4427-4436, 20233 aGhost fishing, caused by lost fishing lines and nets, has become a severe problem in marine environments. To eliminate ghost fishing in the ocean, the environmental degradation behavior of fishing lines must be understood. In this study, the environmental degradation of biodegradable nylon 4 fishing lines and commercial nylon 6, poly(ethylene terephthalate)(PET), and poly(vinylidene fluoride)(PVDF)fishing lines was simulated in the laboratory using an artificial weathering tester and biodegradation test in extracted seawater. To understand the degradation mechanism, the chemical and structural changes induced by photo-oxidation and biodegradation were investigated using tensile test, scanning electron microscopy, differential scanning calorimetry, gel permeation chromatography, infrared spectroscopy, and wide- and small-angle X-ray scattering. The results indicated that photo-oxidation occurred in the amorphous phase of the nylon 4, nylon 6, and PET fishing lines during ultraviolet (UV)exposure. The nylon 4 fishing lines exhibited excellent biodegradability, whereas the nylon 6, PET, and PVDF fishing lines could not be degraded by microorganisms in the extracted seawater. Both processes, i.e., photo-oxidation and biodegradation, were confined to the amorphous regions of nylon 4. Note that the PVDF fishing lines could not be degraded by UV exposure and biodegradation and, hence, should be recycled after use.14aGHOST FISHING14aDERELICT FISHING LINES14aNYLON 414aNYLON 614aPET14aPVDF14aPHOTO-OXIDATION14aBIODEGRADATION12aAn, Y.12aKajiwara, T.12aPadermshoke, A.12aVan Nguyen, T.12aFeng, S.12aMokudai, H.12aTakahara, A.40uhttps://drive.google.com/open?id=14uC0EQmfd6don0QAchMMso91GPk7Kzcg&usp=drive_copyzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx250602s9999    xx |||||s2   |||| ||und|d