球磨法参数对聚烯的机械化学转换的影响
Adrian H Hergesell1, Claire L Seitzinger1, Justin Burg1
1Inorganic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands i.vollmer@uu.nl.
RSC mechanochemistry
|January 6, 2025
概括
优化球磨参数,如球体材料和温度,可显著提高聚合物脱聚合的单体和碳化合物产量. 这项研究为高效的塑料回收过程提供了新的见解.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 球磨是一种潜在的方法,可以去聚合添加聚合物,如聚烯,聚烯和聚烯酸盐,以恢复单体.
- 目前的方法的产量很低,特别是对于具有挑战性的材料,如聚烯,这限制了它们在回收利用中的实际应用.
- 了解削参数的影响对于提高球作为聚合物回收技术的效率和可行性至关重要.
研究的目的:
- 系统地研究各种球磨粉参数如何影响聚合物脱聚合的单体和碳化合物的产量.
- 探索替代模型,以合理化超出简单的动能剂量的机械化学脱聚合过程.
- 为工业回收应用建立扩大机械化学脱聚合的设计原则.
主要方法:
- 系统地调查球磨的关键参数:球体材料,磨削频率,塑料填充度和磨削温度.
- 分析通过变化这些参数而产生的碳化合物和单体产量.
- 在机械应力下将朱尔科夫方程应用于模拟聚合物链裂变.
主要成果:
- 发现重型球体和高磨频率最大限度地提高了机械力,从而增加了碳化合物产量.
- 珠尔科夫方程为理解聚烯脱聚合提供了比动能剂量更好的框架.
- 在40°C以下的削有利于脆性链裂变和脱聚合,而低塑料填充度增加了百分比产量,但导致了工具磨损.
结论:
- 优化加工参数,如球体材料,频率和温度,对于提高脱聚合产量至关重要.
- 珠尔科夫方程提供了一种有价值的方法来合理化机械化学聚合物降解.
- 这项研究为开发高效,大规模的塑料回收机械化学脱聚合工艺提供了基础的见解.
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