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Enhancing the mechanical, morphological, and rheological behavior of polyethylene/polypropylene blends with maleic anhydride-grafted polyethylene
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-08-09 , DOI: 10.1002/pen.25775 Antimo Graziano 1 , Otavio Augusto Titton Dias 2 , Bruno Sena Maia 2 , Jinlei Li 3
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-08-09 , DOI: 10.1002/pen.25775 Antimo Graziano 1 , Otavio Augusto Titton Dias 2 , Bruno Sena Maia 2 , Jinlei Li 3
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This is the first study to showcase the use of maleic anhydride-grafted polyethylene (MAPE) to compatibilize polyethylene (PE)-rich blends, where polypropylene (PP) represents the minor phase. By first mixing PP with MAPE, and then adding PE, MAPE was assumed to be localized at the PE/PP interface. Microscopy analysis confirmed that MAPE led to a remarkably fine PE/PP/MAPE morphology, with PP being uniformly dispersed into PE and having an average diameter 267% smaller than that in the PE/PP blend. According to mechanical and rheological tests, this translated into a 14%, 20%, and 14% enhancement of tensile strength, tensile modulus, and tensile toughness, respectively, as well as a 10% and 20% drop in PE/PP viscosity mismatch and interfacial tension, respectively. Finally, PE/PP/MAPE tensile toughness and elongation at break were greater than those of virgin PP, while PE/PP/MAPE strength and stiffness were similar to the ones of neat PP. Therefore, this study provides industries with the possibility to utilize products rich in PE instead of those made of more expensive PP, while still keeping the level of performance high; hence, creating a paradigm shift in the development of advanced lightweight polyolefin materials with tuned functionalities.
中文翻译：
用马来酸酐接枝聚乙烯增强聚乙烯/聚丙烯共混物的机械、形态和流变行为
这是第一项展示使用马来酸酐接枝聚乙烯 (MAPE) 来增容富含聚乙烯 (PE) 的共混物的研究，其中聚丙烯 (PP) 代表次要相。首先将 PP 与 MAPE 混合，然后加入 PE，假设 MAPE 位于 PE/PP 界面。显微镜分析证实，MAPE 形成了非常精细的 PE/PP/MAPE 形态，PP 均匀分散在 PE 中，平均直径比 PE/PP 混合物中的平均直径小 267%。根据机械和流变测试，这意味着拉伸强度、拉伸模量和拉伸韧性分别提高了 14%、20% 和 14%，以及 PE/PP 粘度失配降低了 10% 和 20%和界面张力。最后，PE/PP/MAPE 的拉伸韧性和断裂伸长率均大于纯 PP，而 PE/PP/MAPE 的强度和刚度与纯 PP 相似。因此，这项研究为工业提供了使用富含 PE 的产品而不是由更昂贵的 PP 制成的产品的可能性，同时仍保持较高的性能水平；因此，在开发具有可调功能的先进轻质聚烯烃材料方面创造了范式转变。
更新日期：2021-10-01
中文翻译：
用马来酸酐接枝聚乙烯增强聚乙烯/聚丙烯共混物的机械、形态和流变行为
这是第一项展示使用马来酸酐接枝聚乙烯 (MAPE) 来增容富含聚乙烯 (PE) 的共混物的研究，其中聚丙烯 (PP) 代表次要相。首先将 PP 与 MAPE 混合，然后加入 PE，假设 MAPE 位于 PE/PP 界面。显微镜分析证实，MAPE 形成了非常精细的 PE/PP/MAPE 形态，PP 均匀分散在 PE 中，平均直径比 PE/PP 混合物中的平均直径小 267%。根据机械和流变测试，这意味着拉伸强度、拉伸模量和拉伸韧性分别提高了 14%、20% 和 14%，以及 PE/PP 粘度失配降低了 10% 和 20%和界面张力。最后，PE/PP/MAPE 的拉伸韧性和断裂伸长率均大于纯 PP，而 PE/PP/MAPE 的强度和刚度与纯 PP 相似。因此，这项研究为工业提供了使用富含 PE 的产品而不是由更昂贵的 PP 制成的产品的可能性，同时仍保持较高的性能水平；因此，在开发具有可调功能的先进轻质聚烯烃材料方面创造了范式转变。
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