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The aging behavior of polyvinyl chloride microplastics promoted by UV-activated persulfate process

Journal of Hazardous Materials 2021 147 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Zhuozhi Ouyang, Xuetao Guo Chuanqi Xiao, Xuetao Guo Zhuozhi Ouyang, Rui Ding, Rui Ding, Rui Ding, Chuanqi Xiao, Chuanqi Xiao, Chuanqi Xiao, Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Chuanqi Xiao, Xuetao Guo Zhuozhi Ouyang, Chuanqi Xiao, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Shuxing Li, Xuetao Guo Shuxing Li, Shuxing Li, Manyi Zhao, Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Manyi Zhao, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Chuanqi Xiao, Chuanqi Xiao, Zhuozhi Ouyang, Rui Ding, Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Quzong Wangmu, Chuanqi Xiao, Chuanqi Xiao, Quzong Wangmu, Xuetao Guo Manyi Zhao, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Chuanqi Xiao, Chuanqi Xiao, Chuanqi Xiao, Xuetao Guo Chuanqi Xiao, Xuetao Guo Rui Ding, Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Manyi Zhao, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Chuanqi Xiao, Chuanqi Xiao, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Shuxing Li, Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Rui Ding, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo

Summary

Researchers investigated UV-activated persulfate as an accelerated aging process for PVC microplastics, finding significant dechlorination and surface changes that help predict long-term weathering behavior of microplastics in the environment.

Polymers

PS PVC

Microplastics (MPs) experienced different aging processes in environment. Literatures about effect of artificially-accelerated aging on MPs behavior are still insufficient. The accelerated process induced by ultraviolet(UV)-activated persulfate (PS) is a promising technology for obtaining different aged MPs to understand long-term aging behavior. In the work, the aging behavior of polyvinyl chloride (PVC) accelerated by UV/PS system were investigated. It exhibited a dechlorination with 58.495 ± 6.090 mg/L Cl release after 35 h UV-activated PS (0.01 M) process. The treatment led to significant alternations on surface morphology and chemical feature of PVC. The crystallinity was increased, and average size was reduced from 154.11 µm to 119.28 µm with aging time. Subsequently, many smaller size particles were produced. Furthermore, the process induced the breaking of backbone. Simultaneously, more oxygen-containing functional groups were identified. The oxidation reaction accelerated by sulfate radical (SO) and reactive oxygen species (ROS) was predominant, which immensely promoted aging process. Sustained high levels of free radical contributed to production of alcohols and carboxylic acids short chain organics. The study explored aging behavior of PVC accelerated by UV/PS system, which could be helpful for understanding environmental behavior and providing further information to assess potential risks of MPs.

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