Publication detail

Morphological, surface and thermal properties of polylactic acid foils, melamine-etherified resin, and polyethylene terephthalate fabric during (bio)degradation in soil

Plohl, Olivija Erjavec, Alen Zemljic, Lidija Fras Vesel, Alenka Colnik, Maja Skerget, Mojca Van Fan, Yee Cucek, Lidija Trimmel, Gregor Valh, Julija Volmajer

Original Title

Morphological, surface and thermal properties of polylactic acid foils, melamine-etherified resin, and polyethylene terephthalate fabric during (bio)degradation in soil

Type

journal article in Web of Science

Language

English

Original Abstract

The (bio)degradation of plastics in soil is a complex process that depends on several factors, such as the type of plastic, environmental conditions, microbial activity, and the presence of other organic matter in the soil. Ageing in soil thus also influences the physicochemical properties of plastic materials. To understand the mechanisms and investigate the changes in plastic properties in soil due to decomposition and followed by fragmentation, the gravimetric, morphological, surface, and thermal properties of plastics were studied, some of them for the first time. The study was performed for three different plastics materials, polyethylene terephthalate (PET-fib) and melamine etherified resin (MER-fib) in the form of nonwoven fabrics and polylactic acid (PLA) in the form of foils. The materials were exposed to soil for one, three and six months, only in the case of PLA foil for final four months. The results show that remarkable changes were observed especially for MER-fib and PLA after exposure to soil, which is related to the bio and chemical degradation proceses. The biodegradation process was indicated with the soil microorganisms used in the study (lactic acid bacteria, photosynthetic organisms, yeasts, actinomycetes, and enzymatically active fungi), while chemical degradation showed that it may occur at the surface of the material with changes in elemental composition and chemical functionality. The microbial end products of biodegradation of MER-fib are presumably NH3 and CO2, while for PET-fib it is CO2 and for PLA it is CO2 and H2O, including several proposed conversion products in partial pathways. The study represent an important contribution to understanding the behaviour of the analysed (bio)plastics and the changes in their properties after exposure to natural systems for pollution countermeasures and cleaner production.

Keywords

(Bio)degradation; Plastic materials; Soil; Surface chemistry; Surface zeta potential; Thermal properties

Authors

Plohl, Olivija; Erjavec, Alen; Zemljic, Lidija Fras; Vesel, Alenka; Colnik, Maja; Skerget, Mojca; Van Fan, Yee; Cucek, Lidija; Trimmel, Gregor; Valh, Julija Volmajer

Released

1. 10. 2023

Publisher

ELSEVIER SCI LTDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

Location

ELSEVIER SCI LTDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISBN

0959-6526

Periodical

Journal of Cleaner Production

Number

421

State

United Kingdom of Great Britain and Northern Ireland

Pages count

16

URL

https://www.sciencedirect.com/science/article/pii/S0959652623027129?via%3Dihub

BibTex

@article{BUT187503,
  author="Plohl, Olivija and Erjavec, Alen and Zemljic, Lidija Fras and Vesel, Alenka and Colnik, Maja and Skerget, Mojca and Van Fan, Yee and Cucek, Lidija and Trimmel, Gregor and Valh, Julija Volmajer",
  title="Morphological, surface and thermal properties of polylactic acid foils, melamine-etherified resin, and polyethylene terephthalate fabric during (bio)degradation in soil",
  journal="Journal of Cleaner Production",
  year="2023",
  number="421",
  pages="16",
  doi="10.1016/j.jclepro.2023.138554",
  issn="0959-6526",
  url="https://www.sciencedirect.com/science/article/pii/S0959652623027129?via%3Dihub"
}