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通过处理聚烯/再生聚乙烯二甲酸盐的有希望的回收策略:使用双兼容器进行反应挤出

Fatemeh Morshedi Dehaghi¹, Mohammad Aberoumand¹, Uttandaraman Sundararaj¹

¹Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2L1Y6, Canada.

|September 14, 2024

概括

这项研究使用双兼容器系统来增强回收塑料混合物,改善机械性能和降解耐受性. 量身定制的兼容剂是塑料垃圾升级的关键.

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:

有效的机械回收塑料废弃物,如聚烯 (PP) 和再生聚乙烯二甲 (rPET),需要改进其混合物的界面粘附性.
目前的兼容性方法在优化混合物特性以广泛应用方面面临挑战.

研究的目的:

调查使用双兼容剂系统,包括基于基无水合物接种聚烯 (PP-g-MA) 和基于甘基甲酸盐 (GMA) 的剂量,以提高PP/rPET混合物的兼容性.
系统地分析兼容剂骨干结构和反应组对混合物形态,机械性能和热稳定性的影响.

主要方法:

PP/rPET混合物的反应挤出与不同的双兼容器系统.
使用里埃变换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 进行表征,以分析化学相互作用和形态.
机械测试 (断裂时的延长,冲击强度) 和热分析 (开始降解温度) 以评估性能.

主要成果:

基于GMA的兼容剂有效地弥合了rPET和PP-g-MA,改善了接口粘附和混合兼容性.
3phr PP-g-MA和3phr乙烯基甲基烯酸糖甲基烯酸聚合物 (EMA-GMA) 的特定组合产生了显著的改善.
观察到协同增强:与不兼容的混合物相比,断裂时延长217%增加,冲击强度增加116%.
双相容性使初始降解温度增加了40°C (与不相容性相比) 和33°C (与单相容性相比).

结论:

定制的多组件兼容器系统,特别是那些涉及GMA基剂的系统,对于提高PP/rPET混合物的界面粘附和整体性能非常有效.
这种方法为升级回收塑料废物提供了一个有希望的战略,促进循环经济.
该研究强调了特定的兼容剂化学的关键作用,以实现回收聚合物复合材料的协同改进.

关键词:

兼容性兼容性兼容性兼容性在现场的移植共聚合物中.接口粘附接口粘附接口粘附机械性能机械性能机械性能反应混合的反应混合.反应挤出反应式挤出.回收废塑料废料的回收.

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