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基于一次性聚烯塑料杯的微塑料的老化和特征及其对乙烯蓝的吸附

Lili Liu¹, Hongzhu Ma¹, Baoshan Xing²

¹School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'An, Shaanxi, 710119, PR China.

|December 19, 2023

概括

本研究研究了一次性杯子中老化的聚烯微塑料 (PP-MPs). 陈旧的PP-MP显示了变化的特性,并吸收了甲基蓝,影响了环境评估.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
聚合物化学聚合物化学

背景情况:

微塑料 (MP) 是普遍存在的环境污染物,具有复杂的影响.
来自食品级一次性杯的聚烯微塑料 (PP-MP) 被调查,与标准的球形MP不同.
了解PP-MPs的衰老和吸附行为对于环境风险评估至关重要.

研究的目的:

为了描述从一次性杯子中获得的老化聚烯微塑料 (PP-MPs).
在各种环境条件下研究PP-MPs对甲基蓝 (MB) 的吸附.
为评估一次性PP塑料杯的环境行为提供理论基础.

主要方法:

对PP-MPs的表征,包括对衰老的碳基指数和结晶性,极性和疏水性分析.
甲蓝 (MB) 在PP-MPs上的吸附实验.
评价pH值,盐度和湿酸对MB吸附的影响.

主要成果:

衰老显著增加了PP-MPs的碳基指数,表明降解加快.
老化还增加了晶度,极度和表面负电荷,同时降低了疏水性.
吸附MB遵循伪二次动力学和亨利/西普斯等热模型,涉及复杂的表面相互作用.

结论:

老化改变了PP-MP的表面特性,影响了它们与环境的相互作用.
吸附机制包括疏水分离,极性相互作用,静电吸引和结合.
这项研究为了解一次性PP塑料杯的环境命运和影响提供了关键数据.

关键词:

衰老的衰老衰老的衰老甲基烯蓝色是什么颜色微塑料的污染微塑料的污染聚烯聚烯的使用方法表面吸附的吸附方式

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