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DOI	10.1016/j.marpolbul.2019.110626
	Morphology and chemical properties of polypropylene pellets degraded in simulated terrestrial and marine environments
	Tang C.-C.; Chen H.-I.; Brimblecombe P.; Lee C.-L.
发表日期	2019
ISSN	0025326X
卷号	149
英文摘要	The morphology and chemical properties of polypropylene pellets degraded in the terrestrial and marine environments reveal their interaction between marine pollutant and biota and help us understand the fate of plastic debris. © 2019 Elsevier LtdPolypropylene (PP) pellets exposed to solar radiation, ultraviolet B (UVB) radiation and heat in four stimulated treatments: dry-air, seawater-air, seawater-darkness, and dry-darkness for 0.5–1.5 years to investigate morphology and chemical change under various environmental conditions. Scanning electron microscopy and infrared spectroscopy were employed to characterize the virgin and degraded pellets. The degraded PP pellets under solar and UVB irradiation revealed 35% and 12% cracks, respectively. Moreover, carbonyl and hydroxyl groups formed on the surface gradually extended to the interior. However, under photo-irradiation, PP pellets floating in seawater showed less degradation than those in a dry environment. The formation of biofilm may retard the photo-degradation of PP pellets in the seawater when biocides are absent. Results also indicated that the photo oxidation dominated over thermal oxidation during the degradation process in the terrestrial and marine environments. © 2019 Elsevier Ltd
英文关键词	Environmental degradation; Marine debris; Photo degradation; Surface cracking; Thermal degradation
语种	英语
scopus关键词	Chemical properties; Debris; Degradation; Infrared spectroscopy; Irradiation; Marine pollution; Pelletizing; Polypropylenes; Pyrolysis; Scanning electron microscopy; Seawater; Thermooxidation; Weathering; Degradation process; Environmental conditions; Marine debris; Marine environment; Polypropylene pellets; Surface cracking; Thermal oxidation; Ultraviolet-B radiations; Morphology; carbonyl derivative; hydroxyl group; polypropylene; sea water; biofilm; chemical pollutant; debris flow; environmental degradation; marine pollution; oxidation; photodegradation; plastic waste; pollution monitoring; air; Article; biofilm; chemical structure; darkness; heat; infrared spectroscopy; land biome; marine environment; photodegradation; photooxidation; pollution monitoring; scanning electron microscopy; solar radiation; ultraviolet B radiation
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149483
作者单位	Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; School of Energy and Environment, City University of Hong Kong, Kowloon, Hong Kong; Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan
推荐引用方式 GB/T 7714	Tang C.-C.,Chen H.-I.,Brimblecombe P.,et al. Morphology and chemical properties of polypropylene pellets degraded in simulated terrestrial and marine environments[J],2019,149.
APA	Tang C.-C.,Chen H.-I.,Brimblecombe P.,&Lee C.-L..(2019).Morphology and chemical properties of polypropylene pellets degraded in simulated terrestrial and marine environments.Marine Pollution Bulletin,149.
MLA	Tang C.-C.,et al."Morphology and chemical properties of polypropylene pellets degraded in simulated terrestrial and marine environments".Marine Pollution Bulletin 149(2019).