Ciobanu Romeo C, Aradoaei Mihaela, Caramitu Alina R, Ion Ioana, Schreiner Cristina M, Tsakiris Violeta, Marinescu Virgil, Hitruc Elena Gabriela, Aflori Magdalena
Department of Electrical Measurements and Materials, Gheorghe Asachi Technical University, 700050 Iasi, Romania.
National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, Romania.
Polymers (Basel). 2023 Jul 25;15(15):3161. doi: 10.3390/polym15153161.
The European methodology for plastics, as a feature of the EU's circular economy activity plan, ought to support the decrease in plastic waste. The improvement of recycled plastics' economics and quality is one important part of this action plan. Additionally, achieving the requirement that all plastic packaging sold in the EU by 2030 be recyclable or reusable is an important objective. This means that food packaging materials should be recycled in a closed loop at the end. One of the most significant engineering polymers is polyethylene terephthalate (PET), which is widely used. Due to its numerous crucial qualities, it has a wide variety of applications, from packaging to fibers. The thermoplastic polyolefin, primarily polyethylene and polypropylene (PP), is a popular choice utilized globally in a wide range of applications. In the first phase of the current experiment, the materials were obtained by hot pressing with the press machine. The reinforcer is made of Al nanopowder 800 nm and Fe nanopowder 790 nm and the quality of the recycled polymer was examined using Fourier transform infrared spectroscopy (FTIR), a scanning electron microscope (SEM), and differential scanning calorimetry (DSC). From DSC variation curves as a function of temperature, the values from the transformation processes (glass transition, crystallization, and melting) are obtained. SEM measurements revealed that the polymer composites with Al have smooth spherical particles while the ones with Fe have bigger rough spherical particles.
作为欧盟循环经济行动计划的一项特色内容，欧洲的塑料方法应有助于减少塑料垃圾。提高再生塑料的经济性和质量是该行动计划的一个重要部分。此外，实现到2030年在欧盟销售的所有塑料包装都可回收或可重复使用这一要求是一项重要目标。这意味着食品包装材料最终应在闭环中进行回收。聚对苯二甲酸乙二酯（PET）是最重要的工程聚合物之一，应用广泛。由于其众多关键特性，它有各种各样的应用，从包装到纤维。热塑性聚烯烃，主要是聚乙烯和聚丙烯（PP），是全球广泛应用的热门选择。在当前实验的第一阶段，材料通过压机热压获得。增强剂由800纳米的铝纳米粉末和790纳米的铁纳米粉末制成，并使用傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和差示扫描量热法（DSC）对再生聚合物的质量进行了检测。从作为温度函数的DSC变化曲线中，可以获得转变过程（玻璃化转变、结晶和熔化）的值。SEM测量表明，含铝的聚合物复合材料有光滑的球形颗粒，而含铁的聚合物复合材料有更大的粗糙球形颗粒。
