Sustainability design of plastic packaging for the Circular Economy

Czarnecka‐Komorowska, Dorota; Wiszumirska, Karolina

doi:10.14314/polimery.2020.1.2

Cited by 62 publications

(28 citation statements)

References 8 publications

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“…All of the factors mentioned above, in addition to relatively low prices (around 2 US$/kg), make polylactide a highly attractive material for many branches of industry. While utilization of PLA used to be limited to medical applications, nowadays different branches of industry use this polymer to manufacture various products, including food packages, fibers and textiles, mulch films used in agriculture, automotive parts, 3D printing filaments, toys, and novelty items, among others [11,16,17]. In order to produce those goods, different processing techniques can be implemented.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Processing Parameters and Degradation of Different Polylactide Grades during Twin-Screw Extrusion

et al. 2020

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This article presents the effect of twin-screw extrusion processing parameters, including temperature and rotational speed of screws, on the structure and properties of four grades of polylactide (PLA). To evaluate the critical processing parameters for PLA and the possibilities for oxidative and thermomechanical degradation, Fourier-transform infrared spectroscopy (FT-IR), oscillatory rheological analysis, and differential scanning calorimetry (DSC) measurements were used. The influence of degradation induced by processing temperature and high shearing conditions on the quality of the biodegradable polyesters with different melt flow indexes (MFIs)was investigated by color analysis within the CIELab scale. The presented results indicate that considering the high-temperature processing of PLA, the high mass flow index and low viscosity of the polymer reduce its time of residence in the plastifying unit and therefore limit discoloration and reduction of molecular weight due to the degradation process during melt mixing, whereas the initial molecular weight of the polymer is not an essential factor.

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Section: Introductionmentioning

confidence: 99%

Correlation between Processing Parameters and Degradation of Different Polylactide Grades during Twin-Screw Extrusion

et al. 2020

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“…The increase in the consumption of raw materials obtained from non-renewable resources is affecting the growing popularity of natural-origin materials. In addition, the circular economy, widely implemented by the European Union, requires that the design of polymer materials should result in a minimum impact on the natural environment [1]. Among the natural additives for polymers, plant, animal and mineral origin can be distinguished.…”

Section: Introductionmentioning

confidence: 99%

Biochar as an Effective Filler of Carbon Fiber Reinforced Bio-Epoxy Composites

Matykiewicz

2020

Processes

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The goal of this work was to investigate the effect of the biochar additive (2.5; 5; 10 wt.%) on the properties of carbon fiber-reinforced bio-epoxy composites. The morphology of the composites was monitored by scanning electron microscopy (SEM), and the thermomechanical properties by dynamic mechanical thermal analysis (DMTA). Additionally, mechanical properties such as impact strength, flexural strength andtensile strength, as well as the thermal stability and degradation kinetics of these composites were evaluated. It was found that the introduction of biochar into the epoxy matrix improved the mechanical and thermal properties of carbon fiber-reinforced composites.

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“…The automotive industry is the third highest polymer-consuming sector, after the packaging and building industries. Unfortunately, many of these elements are mixtures of many different types of polymers [1]. The regulations currently being introduced counteract this tendency.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical-Driven Prediction of Automotive Shredder Residue Pyrolysis Pathways toward Gaseous Products

et al. 2021

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There has been a gradual increase in the field of parts recovery from cars that are withdrawn from use. However, the disposal of automotive shredder residue (ASR) still remains a significant problem. ASR is refuse derived fuel (RDF), which contains mainly plastics, fiber sponges, and rubbers in different proportions, and therefore a thermal treatment of selected waste samples is applied. The presented research includes thermogravimetry (TG) analysis and differential thermogravimetric (DTG) analysis, as well as a proximate and an ultimate analysis of the ASR samples. The obtained results were processed and used as an input for modelling. The numerical calculations focused on the identification of the ASR’s average composition, the raw pyrolysis process product, its dry pyrolytic gas composition, and the combustible properties of the pyrolytic gases. The TGA analysis with three heating rate levels covered the temperature range from ambient to 800 °C. The thermal decomposition of the studied samples was in three stages confirmed with three peaks observed at the temperatures 280, 470, and 670 °C. The amount of solid residue grew with the heating rates and was in the range of 27–32 wt%. The numerical calculation of the pyrolysis process showed that only 0.46 kg of dry gas were formed from 1 kg of ASR. The gas yield increased with the rising temperature, and, at the same time, its calorific value decreased from 19.22 down to 14.16 MJ/m3. This is due to the decomposition of C6+ hydrocarbons and the promotion of CO formation. The thermodynamic parameters of the combustion process for a pyrolytic gas air mixture, such as the adiabatic flame temperature and laminar flame speed, were higher than for methane and were, respectively, 2073 °C and 1.02 m/s.

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Sustainability design of plastic packaging for the Circular Economy

Cited by 62 publications

References 8 publications

Correlation between Processing Parameters and Degradation of Different Polylactide Grades during Twin-Screw Extrusion

Correlation between Processing Parameters and Degradation of Different Polylactide Grades during Twin-Screw Extrusion

Biochar as an Effective Filler of Carbon Fiber Reinforced Bio-Epoxy Composites

Experimental and Numerical-Driven Prediction of Automotive Shredder Residue Pyrolysis Pathways toward Gaseous Products

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