超高分子量,狭窄多分散性多烯胺使用光化聚合物合成生成高性能花粉剂
Moritz Streicher1, Volodymyr Boyko1, Adam Blanazs1
1BASF SE, Carl-Bosch-Straße 38, 67056 Ludwigshafen, Germany.
ACS applied materials & interfaces
|December 7, 2023
概括
通过光化聚合物合成了具有狭窄分子量分布的新型多电解质花剂. 这些先进的花剂通过改善固体液体分离和减少污泥,提高了废水处理效率.
科学领域:
- 聚合物化学 聚合物化学
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
背景情况:
- 超高分子量聚电解质对于废水处理中的高效固体液体分离至关重要.
- 对于具有卓越的排水性能的可持续花剂的需求越来越大,以尽量减少污染和淡水使用.
研究的目的:
- 为了合成超高分子量聚电解质共聚合物薄膜剂,具有狭窄的分子量分布.
- 与商业基准相比,评估这些新型花剂的花效率.
主要方法:
- 在蓝色LED或紫外线照射下利用了三碳酸盐介导的可逆添加-碎片化链转移 (RAFT) 聚合,称为光化聚合,在蓝色LED或紫外线照射下.
- 合成的阴离子和阴离子聚电解质共聚合物,具有受控的单体成分和狭窄的分子量分布 (Mw/M < 1.2).
- 在考林悬浮中评估了花性能,比较狭窄的多分散性共聚合物与广泛的多分散性商业花剂.
主要成果:
- 成功生成了具有极高分子量 (M > 1,000,000 g mol-1) 的聚电解质共聚合物,具有狭窄的分子量分布.
- 具有狭窄多分散性的阴离子聚电解质在考林悬浮澄清中显示出高达50%的花效率提高.
- 增强的性能与低分子量聚合物链的含量减少有关,这些聚合物链表现出较低的花效率.
结论:
- 光化聚合是一种有效的方法,用于生产具有受控分子量的高性能聚电解质花剂.
- 聚电解质花剂的狭窄分子量分布显著提高了它们在固体-液体分离过程中的效率.
- 这些发现有助于开发更可持续,更有效的废水处理技术.
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