Optimization of physical and mechanical properties of PC/ABS/PMMA blends by mixture design approach

IF 2.9 4区 化学 Q2 POLYMER SCIENCE Polymer International Pub Date : 2024-07-16 DOI:10.1002/pi.6681
Rahma Ezzeddine, Karama Elfehri, Ángel Marcos-Fernández, Basma Samet
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Abstract

This study aims to investigate the recycling of end-of-life computer plastics, focusing on polycarbonate (PC) and acrylonitrile–butadiene–styrene (ABS) copolymer, which constitute a significant portion of collected computers. Through differential scanning calorimetry and infrared spectroscopy analyses, the properties of raw PC, ABS and poly(methyl methacrylate) (PMMA) were evaluated. Various blends of PC and ABS were prepared, incorporating different percentages of recycled PMMA as a cost-effective coupling agent. These blends were processed through melt compounding using a contra-rotating twin-screw extruder and subsequently shaped by injection molding. An experimental mixture design was applied to evaluate the mechanical and physical properties of the composite materials, including melt flow index, hardness, flexural strain at break and Charpy impact strength. The results of the desirability analysis indicated that the optimal blend for achieving a balance between mechanical and physical properties consists of a high PC content (approximately 80% or more), a low ABS content (less than 20%) and less than 5% recycled PMMA. © 2024 Society of Chemical Industry.

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用混合物设计方法优化 PC/ABS/PMMA 混合物的物理和机械性能
本研究旨在调查报废计算机塑料的回收情况,重点是聚碳酸酯(PC)和丙烯腈-丁二烯-苯乙烯(ABS)共聚物,这两种塑料在回收的计算机中占很大比例。通过差示扫描量热法和红外光谱分析,对未加工 PC、ABS 和聚甲基丙烯酸甲酯 (PMMA) 的性能进行了评估。制备了 PC 和 ABS 的各种混合物,并加入了不同比例的回收 PMMA 作为具有成本效益的偶联剂。这些混合物通过使用反向旋转双螺杆挤出机进行熔融共混加工,然后通过注塑成型成型。采用实验混合物设计来评估复合材料的机械和物理性能,包括熔体流动指数、硬度、断裂挠曲应变和夏比冲击强度。可取性分析结果表明,实现机械和物理特性平衡的最佳混合物包括高 PC 含量(约 80% 或更高)、低 ABS 含量(低于 20%)和低于 5% 的回收 PMMA。© 2024 化学工业协会。
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来源期刊
Polymer International
Polymer International 化学-高分子科学
CiteScore
7.10
自引率
3.10%
发文量
135
审稿时长
4.3 months
期刊介绍: Polymer International (PI) publishes the most significant advances in macromolecular science and technology. PI especially welcomes research papers that address applications that fall within the broad headings Energy and Electronics, Biomedical Studies, and Water, Environment and Sustainability. The Journal’s editors have identified these as the major challenges facing polymer scientists worldwide. The Journal also publishes invited Review, Mini-review and Perspective papers that address these challenges and others that may be of growing or future relevance to polymer scientists and engineers.
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