聚合物混合物增方法用于量化100%聚烯混合物的聚烯变体
Meysam Hashemnejad1, Ami Doshi1
1Cincinnati Technology Center, LyondellBasell, 11530 Northlake Drive, Cincinnati, OH 45249, USA.
Polymers
|September 27, 2025
概括
精确识别回收材料中的聚烯类型对于有效的回收至关重要. 一种新的结晶化分化 (CEF) 方法精确量化了回收聚烯混合物中的Homo-PP和Random-PP.
科学领域:
- 聚合物科学 聚合物科学
- 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:
- 对消费后回收 (PCR) 聚烯的准确表征对于优化机械回收和与原始聚合物混合至关重要.
- 在100%的PP材料中,区分异体性Homo-PP (Homo-PP),随机PP和非晶体PP组件是具有挑战性的.
- 现有的方法难以精确量化复杂的回收流中的PP变体.
研究的目的:
- 开发和验证一种基于溶液的结晶化分离 (CEF) 技术,用于精确的PP变体量化.
- 为了能够准确地确定回收聚烯中的Homo-PP,Random-PP和非晶体PP含量.
- 支持知情的材料选择,提高聚烯回收操作的效率.
主要方法:
- 采用了一种基于溶液的新结晶化分化 (CEF) 技术.
- 线性低密度聚乙烯 (LLDPE) 引入,以促进100% PP样本中的Homo-PP与随机PP的分离.
- 已建立的校准曲线被用于PP变体的定量分析.
主要成果:
- 在PP混合系统中,CEF技术成功地分离和量化了Homo-PP和Random-PP.
- 通过广泛的成分范围实现了准确的量化,从大约5%到95%的重量随机-PP.
- 该方法有效地解决了Homo-PP,随机PP和非晶体PP分数.
结论:
- 拟议的CEF方法为在回收材料中的PP变体的特征提供了可靠的解决方案.
- 这种技术为PP成分提供了宝贵的见解,有助于优化回收过程.
- 更好地了解PCR PP成分可以促进更可持续和更有效的聚合物回收利用.
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