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Formation of Nano- and Microplastics and Dissolved Chemicals During Photodegradation of Polyester Base Fabrics with Polyurethane Coating

Environmental Science & Technology 2023 73 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xiaowei Wu, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Yanqi Shi, Yanqi Shi, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Zhimin Gong, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Yanqi Shi, Xiaowei Wu, Xiaowei Wu, Yanqi Shi, Xiaowei Wu, Peng Liu, Xiaowei Wu, Xiaowei Wu, Zhimin Gong, Peng Liu, Yanqi Shi, Peng Liu, Peng Liu, Peng Liu, Yanqi Shi, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Peng Liu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Zhimin Gong, Hexinyue Huang, Yanqi Shi, Xiaowei Wu, Hexinyue Huang, Hexinyue Huang, Xiaowei Wu, Xiaowei Wu, Lezhou Zheng, Lezhou Zheng, Yanqi Shi, Zhimin Gong, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Lezhou Zheng, Lezhou Zheng, Wentao Li, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Yanqi Shi, Zhimin Gong, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Wentao Li, Lezhou Zheng, Lezhou Zheng, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Zhimin Gong, Yanqi Shi, Lezhou Zheng, Lezhou Zheng, Peng Liu, Peng Liu, Xiaowei Wu, Xiaowei Wu, Yechao Tian, Yanqi Shi, Hexinyue Huang, Yechao Tian, Yechao Tian, Hexinyue Huang, Yanqi Shi, Yechao Tian, Yechao Tian, Yechao Tian, Peng Liu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Peng Liu, Zhimin Gong, Yanqi Shi, Peng Liu, Yanqi Shi, Yanqi Shi, Zhimin Gong, Xiaowei Wu, Wentao Li, Wentao Li, Hexinyue Huang, Wentao Li, Yanqi Shi, Hexinyue Huang, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Zhimin Gong, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Zhimin Gong, Zhimin Gong, Zhimin Gong, Yanqi Shi, Zhimin Gong, Yanqi Shi, Yanqi Shi, Yanqi Shi, Zhimin Gong, Xiaowei Wu, Shixiang Gao Hexinyue Huang, Zhimin Gong, Yanqi Shi, Zhimin Gong, Peng Liu, Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao Wentao Li, Peng Liu, Peng Liu, Yanqi Shi, Hexinyue Huang, Yanqi Shi, Xiaowei Wu, Hexinyue Huang, Yanqi Shi, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Peng Liu, Xiaowei Wu, Yanqi Shi, Hexinyue Huang, Shixiang Gao Xiaowei Wu, Peng Liu, Shixiang Gao Shixiang Gao Peng Liu, Wentao Li, Wentao Li, Wentao Li, Wentao Li, Peng Liu, Shixiang Gao Shixiang Gao Wentao Li, Shixiang Gao Xiaowei Wu, Shixiang Gao Zhimin Gong, Shixiang Gao Peng Liu, Zhimin Gong, Peng Liu, Shixiang Gao Yanqi Shi, Shixiang Gao Yanqi Shi, Shixiang Gao Shixiang Gao Yanqi Shi, Yanqi Shi, Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao

Summary

Researchers investigated the photodegradation of polyester fabrics with polyurethane coating, a common composite material in synthetic leather, to understand microplastic and chemical release. The study found that the PU coating delayed but did not prevent degradation, with both microplastic fibers and particles being released along with dissolved chemicals, highlighting the environmental risks of composite plastic materials.

Polymers

PET PU

Polyurethane (PU) synthetic leathers possess an intricate plastic composition, including polyester (PET) base fabrics and upper PU resin, but the release of fragments from the complexes is unclear. Therefore, we investigated the photodegradation trends of PET base fabrics with PU coating (PET-U) as a representative of composite plastics. Attention was paid to the comparison of the photoaging process of PET-U with that of pure PET base fabric (PET-P). To reveal the potential for chain scission, physical and chemical changes (e.g., surface morphology, molecular weight, and crystallinity) of the two fabrics were explored. The generation of microplastic fibers (MPFs) and microplastic particles (MPPs) was distinguished. Compared with PET-P, PET-U showed a similar but delayed trend in various characteristics and debris release rate as the photoaging time prolonged. Even so, after 360 h of illumination, the generated number of MPs (including MPFs and MPPs) rose considerably to 9.32 × 107 MPs/g, and the amount of released nanoplastics (NPs) increased to 2.70 × 1011 NPs/g from PET-U. The suppression of MP formation from PET-U was potentially directed by the physical shielding of the upper PU layer and the dropped MPs, which resisted the photochemical radical effect. The components of dissolved organic matter derived from plastics (P-DOM) were separated by molecular weight using a size-exclusion chromatography-diode array detector-organic carbon detector/organic nitrogen detector (SEC-DAD-OCD/OND), and the results showed that a larger amount of carbon- and nitrogen-containing chemical substances were generated in PET-U, accompanied by more aromatic and fluorescent compounds. The results provided theoretical bases and insights for future research on the risks of plastic debris from PU synthetic leathers on aquatic organisms and indicated feasible directions for exploring combined pollution studies of plastics.

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