Environmental degradation and formation of secondary microplastics from packaging material: A polypropylene film case study

被引：44

作者：

Huber, Miriam ^{[1
]}

Archodoulaki, Vasiliki-Maria ^{[1
]}

Pomakhina, Elena ^{[2
]}

Pukanszky, Bela ^{[3
,4
]}

Zinoecker, Erich ^{[2
]}

Gahleitner, Markus ^{[2
]}

机构：

[1] Vienna Univ Technol, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria

[2] Borealis Polyolefine GmbH, Innovat Headquarters, St Peter Str 25, A-4021 Linz, Austria

[3] Budapest Univ Technol & Econ, Dept Phys Chem & Mat Sci, Lab Plast & Rubber Technol, POB 91, H-1521 Budapest, Hungary

[4] ELKH Eotvos Lorand Res Network, Inst Mat & Environm Chem, Res Ctr Nat Sci, POB 286, H-1519 Budapest, Hungary

来源：

POLYMER DEGRADATION AND STABILITY | 2022年 / 195卷

关键词：

Microplastics; Polypropylene; Degradation; Environment; ACCUMULATION; TEMPERATURE; PARTICLES; OXIDATION; POLLUTION; KINETICS; WATER;

D O I：

10.1016/j.polymdegradstab.2021.109794

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A model study on isotactic polypropylene (iPP) films as commonly used in packaging was performed for simulating the process of microplastics formation from large-scale objects like littered packaging material,. Accelerated ultraviolet (UV) ageing in a Xenotest device resulted in chemical degradation and oxidation of the polymer, together with fragmentation into sub-mm particles, within less than 48 h. Combining the results with an independent Arrhenius study allowed an estimate of the lifetime until sub-mm particle formation between 9 months and 3.2 years, depending on location and climate. The findings offer a possible explanation for the mass loss at the lower end of the particle size distribution of environmental microplastics and the divergence between input estimates and actually detected amounts of microplastics. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：7

共 50 条

[1]

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