Change in the chemical, mechanical and physical properties of plastics due to UVA degradation in different water matrices: A study on the recyclability of littered plastics

Stapleton, Michael J.; Ansari, Ashley J.; Ahmed, Aziz; Hai, Faisal I.

doi:10.1016/j.envpol.2023.122226

Cited by 13 publications

(2 citation statements)

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“…The 14 subcategories of plastics can be separated again into single-use and recyclable plastics. Single-use plastics include plastic bags, cutlery, straws, polystyrene cup, and food containers, including cigarettes buds (Schnurr et al, 2018;Binetti et al, 2020), while recyclable plastics include plastic bottles, including their caps, toys, jerry cans, and others (Iñiguez et al, 2018;Stapleton et al, 2023). The litter was also categorized according to its buoyancy properties, which consist of three categories: persistent buoyancy (straw, plastic, and polystyrene), short-term buoyancy (cigarette buds, ropes, paper, rubber, fabric, processed wood, and sanitary waste), and nonbuoyancy (metal, glass, and ceramic) (Rizzo et al, 2021).…”

Section: Sampling Methods and Marine Litter Identificationmentioning

confidence: 99%

Spatial distribution and composition of marine litter on sandy beaches along the Indian Ocean coastline in the south Java region, Indonesia

Yona,

Nooraini,

Putri

et al. 2023

Front. Mar. Sci.

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Marine litter in coastal areas can bring economic, social, and environmental damage, especially the loss of aesthetic value of a tourist site. Therefore, research on the composition of marine litter to identify its sources is important for planning strategic action to minimize the problem. This study analyzed beach litter composition on five beaches (Kondangmerak, Balekambang, Ungapan, Ngudel, and Goa Cina) along the Indian Ocean coastline in the eastern part of the south Java region, Indonesia. All the beaches are known as the famous touristic beaches of Malang City, and receive many visitors, especially during the holiday season. Beach litter composition was obtained by collecting different types of litter in a 5 x 5 m square transect. Five square transects were placed along the beach strandline at each beach, and intervals of 20 m separated each transect. In each transect, the litter was collected and counted based on its category (plastic, paper, rubber, fabric, processed wood, metal, glass, ceramic, and hazardous items) and size (0.5–2.5cm, 2.5–5cm, 5–10 cm, and > 10 cm). There was a statistically significant variation in the number of litters among the sizes (p<0.05). However, the distribution of beach litter remained consistent across beaches regardless of its size. In general, beach litter with a size > 10 cm was found least on all beaches (< 15%), while the other three size categories were found in similar numbers (in the range of 20% to 50%). Plastic was the dominating type of litter on all beaches. Based on the Clean Coastal Index, all beaches were considered dirty to extremely dirty. All litter on the beaches was the product of tourism activities, and littering habits play a significant role as the source of marine litter in the study areas. Since this is the first study on the marine litter composition in the eastern part of south Java, the results of this study can be used as a baseline for future studies to prevent marine debris pollution and to develop management strategies for reducing the impact of marine debris on the environment.

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Section: Sampling Methods and Marine Litter Identificationmentioning

confidence: 99%

Spatial distribution and composition of marine litter on sandy beaches along the Indian Ocean coastline in the south Java region, Indonesia

Yona,

Nooraini,

Putri

et al. 2023

Front. Mar. Sci.

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“…The criteria for considering marine plastic litter for upcycling purposes involve no significant decrease in chemical, physical, and mechanical properties compared with virgin polymers. Conversely, if significant changes are observed, downcycling of the littered plastic would be recommended [143].…”

Section: Mechanical Recyclingmentioning

confidence: 99%

An Overview of the Current Trends in Marine Plastic Litter Management for a Sustainable Development

Râpă,

Cârstea,

Șăulean

et al. 2024

Recycling

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This review summarizes recent data related to the management of marine plastic litter to promote sustainable development. It discusses the distribution and identification of marine plastic litter, assesses the potential socio-economic and environmental impacts of these pollutants, and explores their recovery strategies, from a circular economy perspective. The main findings indicate that the majority of marine plastic litter originates from land-based sources. Current technologies and approaches for valorizing marine plastic litter include mechanical and chemical recycling, blockchain technologies by providing traceability, verification, efficiency and transparency throughout the recycling process, and public awareness programs and education. The developed policies to prevent marine plastic litter emphasize regulations and initiatives focused toward reducing plastic use and improving plastic waste management. By adopting a holistic and sustainable approach, it is possible to mitigate the environmental impact of marine plastic debris while simultaneously creating economic opportunities.

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Effects of photodegradation performance with PLA‐containing samples on double injection molding

Li,

Lin,

Xie

et al. 2024

J of Applied Polymer Sci

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The influence of different overlay layers (ABS, PC, and PLA) is investigated on the photodegradation behavior of poly(lactic acid) (PLA)‐containing samples in double injection molding, and PLA/PLA samples serve as the control group. In terms of microstructure, an analysis is conducted on the chemical structure, thermal performance, crystallinity, and molecular weight of the base layer of samples. The carbonyl index and molecular weight of the base layer of PLA/PLA samples decrease rapidly, and the trend of crystallinity change is also fast. Among them, the number of molecular chain scissions decreases to 0.61, and the crystallinity increases to a maximum of 17.93%, which indicates that the photodegradation degree of the base layer of PLA/PLA samples is greater than that of the other two samples. The microscopic surface morphology change of the base layer of three PLA‐containing samples is analyzed. The base layer of PLA/PLA samples becomes rougher after 600 h of UV degradation. Meanwhile, compared with other PLA‐containing samples, the percentage of tensile strength loss of PLA/PLA samples is higher, decreasing by 16.64%. In summary, using acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) materials as overlay layers for double injection molding can mitigate the photodegradation of the base layer of PLA‐containing samples in double injection molding.

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Change in the chemical, mechanical and physical properties of plastics due to UVA degradation in different water matrices: A study on the recyclability of littered plastics

Cited by 13 publications

References 50 publications

Spatial distribution and composition of marine litter on sandy beaches along the Indian Ocean coastline in the south Java region, Indonesia

Spatial distribution and composition of marine litter on sandy beaches along the Indian Ocean coastline in the south Java region, Indonesia

An Overview of the Current Trends in Marine Plastic Litter Management for a Sustainable Development

Effects of photodegradation performance with PLA‐containing samples on double injection molding

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