回收聚乙烯/聚胺多层薄膜与聚异烯-基) 兼容剂
Andreia Romeiro1, Cidália Teixeira2, Henrique Costa3
1University of Coimbra, Centre for Mechanical Engineering Materials and Processes, ARISE, Department of Chemical Engineering, Rua Silvio Lima- Polo II, 3030-790 Coimbra, Portugal.
Polymers
|April 27, 2024
概括
由于聚合物不兼容,回收聚乙烯 (PE) 和聚胺 (PA) 等混合塑料薄膜具有挑战性. 这项研究发现,聚二烯-移植-雄性无水化物 (PI-g-MA) 有效地使PE/PA混合物相容,改善了回收薄膜的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续的塑料回收利用 可持续的塑料回收利用
背景情况:
- 聚合物不兼容性阻碍了混合塑料废物的机械回收,特别是多层薄膜.
- 通常用于包装的多层薄膜通常由聚乙烯 (PE) 和聚胺 (PA) 组成,它们本质上是不混合的.
- 有效的兼容剂对于最大限度地减少相位分离和增强再生PE/PA混合物的性能至关重要.
研究的目的:
- 评估聚二烯-移植-雄性无水化物 (PI-g-MA) 作为机械回收PE/PA多层薄膜的兼容剂的有效性.
- 确定PI-g-MA的最佳度,以提高回收PE/PA混合物的性能.
- 描述相容的回收膜的热,形态和机械性能.
主要方法:
- 机械混合再生PE/PA薄膜,使用不同度的商业PI-g-MA.
- 评估机械性能,包括箭头冲击,撕裂和穿孔阻力.
- 使用热重力测量分析 (TG) 和差分扫描热量计 (DSC) 进行热分析.
- 通过里埃变换红外光谱学 (FTIR) 进行化学表征,并使用扫描电子显微镜 (SEM) 进行形态分析.
主要成果:
- 添加PI-g-MA显著改善了PE/PA混合物的兼容性和特性.
- 含有1.5%PI-g-MA的薄膜表现出最有利的机械性能和对箭头冲击的抵抗力.
- 热和形态分析证实了PI-g-MA的兼容作用,减少了相隔.
结论:
- 聚二烯-移植-雄性无水化物 (PI-g-MA) 是一种有效的兼容剂,可提高PE/PA多层薄膜的可回收性和性能.
- 使用1.5%PI-g-MA的优化兼容性导致回收片的机械性能优越.
- 这种方法提供了一种可行的策略,可以提高再生PE/PA材料的价值和应用范围.
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