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从废植物油到HDPE/PA6混合物的绿色兼容剂
Miriam Cappello1, Giovanna Strangis1, Patrizia Cinelli1
1Department of Civil and Industrial Engineering, University of Pisa, L.go L. Lazzarino 2, 56122 Pisa, Italy.
Polymers
|October 28, 2023
概括
氧化废植物油 (EWVO) 作为高密度聚乙烯 (HDPE) 和聚胺-6 (PA6) 混合物的绿色兼容剂. EWVO提高了高HDPE含量混合物的机械性能,提供了一个可持续的回收解决方案.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料科学与工程 材料科学与工程
- 可持续化学 可持续化学
背景情况:
- 混合聚乙烯 (PE) 和聚胺 (PA) 提供具有理想性质的具有成本效益的材料.
- 在不进行分离的情况下回收PE/PA混合物是一种有吸引力的可持续方法.
- 绿色兼容剂旨在提高PE/PA混合物的性能和可加工性.
研究的目的:
- 调查环氧化废植物油 (EWVO) 作为高密度聚乙烯 (HDPE) /聚胺-6 (PA6) 反应混合的绿色兼容剂前体 (CP).
- 评估EWVO对HDPE/PA6混合物的形态,热性质,风质和机械性能的影响.
- 为了比较EWVO与处女废植物油 (WVO) 和基于化石的商业CP.
主要方法:
- 由废植物油 (WVO) 合成的EWVO,使用离子交换树脂催化.
- HDPE/PA6混合物以不同的比例 (25/75,75/25,85/15) 制备,具有不同的EWVO度 (1, 2, 5 phr).
- 通过扫描电子显微镜 (SEM),微分扫描热量计 (DSC),风学和机械测试进行混合性表征.
主要成果:
- 在高HDPE含量 (75/25和85/15的比率) 的HDPE/PA6混合物中,EWVO在2phr时显示出令人满意的兼容效应.
- 与不兼容的对应物相比,在与EWVO兼容的混合物中观察到更好的机械性能.
- 高聚胺-6 (PA6) 含量混合物 (25/75比) 表现出过度的交叉链接,阻碍了加工和表征.
结论:
- EWVO是HDPE/PA6混合物的有效绿色兼容剂,其中大多数是HDPE.
- EWVO的兼容效率取决于混合物的组成.
- EWVO显示了提高特定HDPE/PA6配方可回收性和性能的潜力.
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