Next Article in Journal
Review of the Common Deposition Methods of Thin-Film Pentacene, Its Derivatives, and Their Performance
Next Article in Special Issue
Detecting Micro- and Nanoplastics Released from Food Packaging: Challenges and Analytical Strategies
Previous Article in Journal
Cost Function Analysis Applied to Different Kinetic Release Models of Arrabidaea chica Verlot Extract from Chitosan/Alginate Membranes
Previous Article in Special Issue
A Mini-Review of Strategies for Quantifying Anthropogenic Activities in Microplastic Studies in Aquatic Environments
Article

An In Situ Experiment to Evaluate the Aging and Degradation Phenomena Induced by Marine Environment Conditions on Commercial Plastic Granules

1
Istituto per i Processi Chimico-Fisici, Sede di Pisa, del Consiglio Nazionale delle Ricerche, (IPCF-CNR), Via G. Moruzzi 1, 56124 Pisa, Italy
2
Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Roma, Italy
3
Istituto di Scienze Marine, Sede di Lerici, del Consiglio Nazionale delle Ricerche, (ISMAR-CNR), 19032 Lerici, Italy
4
Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Jacopo La Nasa
Polymers 2022, 14(6), 1111; https://doi.org/10.3390/polym14061111
Received: 9 February 2022 / Revised: 2 March 2022 / Accepted: 3 March 2022 / Published: 10 March 2022
(This article belongs to the Special Issue Microplastics Degradation and Characterization)
In this paper, we present two novel experimental setups specifically designed to perform in situ long-term monitoring of the aging behaviour of commercial plastic granules (HDPE, PP, PLA and PBAT). The results of the first six months of a three year monitoring campaign are presented. The two experimental setups consist of: (i) special cages positioned close to the sea floor at a depth of about 10 m, and (ii) a box containing sand exposed to atmospheric agents to simulate the surface of a beach. Starting from March 2020, plastic granules were put into the cages and plunged in seawater and in a sandboxe. Chemical spectroscopic and thermal analyses (GPC, SEM, FTIR-ATR, DSC, TGA) were performed on the granules before and after exposure to natural elements for six months, in order to identify the physical-chemical modifications occurring in marine environmental conditions (both in seawater and in sandy coastal conditions). Changes in colour, surface morphology, chemical composition, thermal properties, molecular weight and polydispersity, showed the different influences of the environmental conditions. Photooxidative reaction pathways were prevalent in the sandbox. Abrasive phenomena acted specially in the sea environment. PLA and PBAT did not show significant degradation after six months, making the possible reduction of marine pollution due to this process negligible. View Full-Text
Keywords: multi-parametric platform; bioplastics; polymer degradation; marine environment; microplastics; spectroscopy; resin pellets multi-parametric platform; bioplastics; polymer degradation; marine environment; microplastics; spectroscopy; resin pellets
Show Figures

Graphical abstract

MDPI and ACS Style

De Monte, C.; Locritani, M.; Merlino, S.; Ricci, L.; Pistolesi, A.; Bronco, S. An In Situ Experiment to Evaluate the Aging and Degradation Phenomena Induced by Marine Environment Conditions on Commercial Plastic Granules. Polymers 2022, 14, 1111. https://doi.org/10.3390/polym14061111

AMA Style

De Monte C, Locritani M, Merlino S, Ricci L, Pistolesi A, Bronco S. An In Situ Experiment to Evaluate the Aging and Degradation Phenomena Induced by Marine Environment Conditions on Commercial Plastic Granules. Polymers. 2022; 14(6):1111. https://doi.org/10.3390/polym14061111

Chicago/Turabian Style

De Monte, Cristina, Marina Locritani, Silvia Merlino, Lucia Ricci, Agnese Pistolesi, and Simona Bronco. 2022. "An In Situ Experiment to Evaluate the Aging and Degradation Phenomena Induced by Marine Environment Conditions on Commercial Plastic Granules" Polymers 14, no. 6: 1111. https://doi.org/10.3390/polym14061111

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop