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Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
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减少手工洗的聚烯的微塑料纤维脱落.

Amanuel Goliad1, Samuel Au1, Kevin Golovin2

  • 1Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON, M5S 3G8, Canada.

Scientific reports
|November 11, 2025
PubMed
概括

洗手织品释放微塑料纤维 (MPF),较高的水总溶解固体 (TDS) 会增加MPF的释放,但纤维长度会减少. 反MPF涂层在洗手时是有效的,尽管效率因织物类型而异.

科学领域:

  • 环境科学 环境科学
  • 材料科学 材料科学 材料科学
  • 织工程 织工程 织工程

背景情况:

  • 微塑料纤维 (MPF) 是一个生态和健康问题,织品洗是主要来源.
  • 大多数MPF研究集中在机器洗上,但手洗在全球范围内很普遍.
  • 现有的减少MPF的涂层主要是在洗衣机条件下进行测试.

研究的目的:

  • 为了评估在洗手过程中减少MPF的涂层的有效性.
  • 为了研究水质,特别是总溶解固体 (TDS) 对洗手期间释放的MPF的影响.
  • 为了在各种洗手条件下比较不同聚织物结构 (染色为黑色和绿色) 的MPF释放.

主要方法:

  • 涂层和未涂层的100%聚织物 (绿色和黑色) 在脱离离子水,自来水和安大略湖水中洗手.
  • 每克织物释放的微塑料纤维 (MPF) 的量化.
  • 在释放的纤维中分析MPF长度分布.
  • 在不同的水条件和织物类型中评估抗MPF涂层的有效性.

主要成果:

  • 在水中较高的总溶解固体 (TDS) 显著增加了涂层和未涂层织物中的MPF释放.
  • 在安大略湖水 (高TDS) 中洗手,与去离子化水相比,从未涂层的织物中释放出200-240%更多的MPF/g.
关键词:
面料的完成品 面料的完成品洗手的方法 洗手的方法微塑料纤维是一种微塑料.微塑料是一种微塑料.酸是一种酸.

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  • 较高的TDS水减少了释放的MPF的平均长度,这表明纤维进一步破裂.
  • 减少MPF的涂层的有效性因织物结构而异,绿色聚的释放率降低了77-92%,但黑色聚的释放率只有26-37%.

    • 结论:

    • 抗MPF涂层在减少洗手时释放的纤维方面表现出有效性.
    • 水总溶解固体 (TDS) 在释放的MPF的数量和特征中起着关键作用.
    • 织物结构在洗手过程中显著影响MPF降低涂料的性能.