Oxidative depolymerization of polyethylene (PE), polypropylene (PP) and polystyrene (PS) wastes to value-added chemicals

IF 7.4 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-10-01 DOI:10.1016/j.polymdegradstab.2025.111709

Hasan Shahriar Raby , M Mizanur Rahman , Mohammed Gamal Mohammed , Muhammad N. Siddiquee

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引用次数: 0

Abstract

Polymer materials are essential in modern applications such as packaging, construction, and textiles, however, their widespread use generates substantial waste. Due to the complex depolymerization processes, this polymeric waste is becoming an environmental burden. Oxidative depolymerization of polymer wastes has a potentially great impact on the economy, environment, and health. This comprehensive study reviews the latest updates on oxidative depolymerization of polystyrene, polypropylene, and polyethylene. These three polymers were selected due to their extensive commercial use and substantial contribution to plastic waste. The review also addresses the commercial and ecological implications of the oxidative depolymerization of these polymers. Besides, it explores the impact of environmental conditions, additive availability, and polymer molecular structure on oxidative depolymerization. Oxidative depolymerization mechanisms such as chain scission, cross-linking, and chain termination reactions are also discussed. Comparisons are drawn between the three polymers of interest to identify the differences in the factors affecting depolymerization and depolymerization mechanisms. This review is relevant to industries that depend on polymers, underscoring the need to understand the factors driving oxidative depolymerization.

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聚乙烯（PE）、聚丙烯（PP）和聚苯乙烯（PS）废弃物氧化解聚成增值化学品

高分子材料在包装、建筑和纺织等现代应用中是必不可少的，然而，它们的广泛使用产生了大量的废物。由于复杂的解聚过程，这些聚合物废物正在成为环境负担。聚合物废弃物的氧化解聚对经济、环境和健康具有潜在的巨大影响。本文综述了聚苯乙烯、聚丙烯和聚乙烯氧化解聚的最新进展。选择这三种聚合物是因为它们广泛的商业用途和对塑料废物的重大贡献。本文还讨论了这些聚合物的氧化解聚的商业和生态意义。此外，还探讨了环境条件、添加剂可用性和聚合物分子结构对氧化解聚的影响。氧化解聚机理，如链断裂，交联和链终止反应也进行了讨论。比较了三种感兴趣的聚合物，以确定影响解聚的因素和解聚机理的差异。这篇综述与依赖于聚合物的工业有关，强调需要了解驱动氧化解聚的因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.