Compatibilizer Efficiency in Enhancing Marine Plastic Waste Valorization Through Simulated Recycled Plastic Blends.

IF 4.7 3区 工程技术 Q1 POLYMER SCIENCE
Polymers Pub Date : 2024-12-08 DOI:10.3390/polym16233441
Sibele Piedade Cestari, Pedro Veiga Rodrigues, Ana Cristina Ribeiro, Maria Cidália Rodrigues Castro, Vasco Cruz, Ana Rita Torres, Nuno Ramos, Ana Vera Machado
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Abstract

This study investigated the optimal combination of compatibilizers and stabilizers to enhance the value of marine environment plastic (MEP). The composition of the plastics was analysed, and a simulated recycled plastic blend (sMEP) was prepared based on a simplified composition of actual MEP. Different concentrations of three commercial compatibilizers (C1, C2 and C3) were tested to improve tensile strength. The tensile tests indicated that the blend compatibilized with 10 wt.% C3 (polypropylene grafted with maleic anhydride) exhibited the highest increase in tensile strength. This optimal compatibilization was then combined with two commercial stabilizers and applied to a simulated MEP blend. Scanning electron microscopy images showed that all blends had a continuous polyethylene phase with dispersed poly(ethylene terephthalate) (PET) and polypropylene (PP) droplets. The simulated blend with 10 wt.% C3 exhibited a reduced PET droplet size in the dispersed phase. Differential scanning calorimetry results revealed a decrease in polyethylene crystallinity and an increase in PP crystallinity. The improved properties of the blend were attributed to the effectiveness of the C3 compatibilizer in enhancing the interface between the PP and PET phases. An effective formulation was developed to valorise marine-sourced plastics by leveraging existing scientific knowledge and accessible commercial additives. Applying this enhanced formulation to real MEP not only demonstrated its effectiveness, but also highlighted a practical approach for reducing plastic pollution and supporting circular economy principles, contributing to environmental conservation efforts.

通过模拟再生塑料共混物增强海洋塑料废物增值的相容剂效率。
研究了增容剂和稳定剂的最佳组合,以提高海洋环境塑料(MEP)的使用价值。对塑料的组成进行了分析,并在实际再生塑料的简化组成基础上制备了模拟再生塑料共混物(sMEP)。测试了不同浓度的3种商用增容剂(C1、C2和C3)对抗拉强度的改善作用。拉伸试验表明,加入10% wt.% C3(顺酐接枝聚丙烯)的共混物抗拉强度提高最高。然后将这种最佳增容剂与两种商业稳定剂结合,并应用于模拟的MEP共混物。扫描电镜图像显示,所有共混物均具有连续的聚乙烯相,分散有聚对苯二甲酸乙二醇酯(PET)和聚丙烯(PP)液滴。当C3含量为10%时,分散相中的PET液滴尺寸减小。差示扫描量热法结果显示聚乙烯结晶度降低,PP结晶度增加。共混物性能的改善是由于C3增容剂增强了PP和PET相之间的界面。通过利用现有的科学知识和可获得的商业添加剂,开发了一种有效的配方来提高海洋塑料的价值。将这一改进的配方应用于实际的环境保护,不仅证明了它的有效性,而且突出了减少塑料污染和支持循环经济原则的实用方法,为环境保护做出了贡献。
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来源期刊
Polymers
Polymers POLYMER SCIENCE-
CiteScore
8.00
自引率
16.00%
发文量
4697
审稿时长
1.3 months
期刊介绍: Polymers (ISSN 2073-4360) is an international, open access journal of polymer science. It publishes research papers, short communications and review papers. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Polymers provides an interdisciplinary forum for publishing papers which advance the fields of (i) polymerization methods, (ii) theory, simulation, and modeling, (iii) understanding of new physical phenomena, (iv) advances in characterization techniques, and (v) harnessing of self-assembly and biological strategies for producing complex multifunctional structures.
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