Materials Selection of 3D Printing Filament and Utilization of Recycled Polyethylene Terephthalate (PET) in a Redesigned Breadboard

Exconde, Mark Keanu James E.; Co, Julie Anne A.; Manapat, Jill Z.; Magdaluyo, Eduardo R.

doi:10.1016/j.procir.2019.04.337

Cited by 54 publications

(39 citation statements)

References 8 publications

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“…A larger shift is observed for the (100) peak. It can be detected that the crystallite size of samples isotherm crystallized at 423 or 453 K differs significantly from the samples crystallized at 483 K in the direction of D (1)(2)(3)(4)(5)(6)(7)(8)(9)(10) , D (100) and D (101) which may indicate a different nucleation process. Based on the sizes measured for the first three peaks, the crystallites tend to take isometric shape at 488 K, while platy shape is the most characteristic at room temperature.…”

Section: Crystalline Form Analysismentioning

confidence: 94%

“…The usage of poly(ethylene terephthalate) (PET) still increases nowadays; in original form and as secondary raw material alike [1,2]. Besides the packaging industry, PET is increasingly used as a technical material thanks to the achievements of the material developments (Solid State Polycondensation reaction (SSP) or chain extender additives) and the advancements in the processing technologies (foam forming, 3D printing) [3][4][5][6][7]. Regarding applicability of the final products the mechanical properties are crucial, which are greatly affected by the morphology and crystalline structure formed during processing [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Melting temperature versus crystallinity: new way for identification and analysis of multiple endotherms of poly(ethylene terephthalate)

et al. 2020

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Poly(ethylene terephthalate) (PET) materials with different molecular weights were isothermally crystallized from melt by systematically varying the temperature and duration of the treatment performed in the differential scanning calorimeter (DSC). Multiple endotherm peaks were observed on the subsequent heating thermograms that were separated from each other on the basis of their melting temperature versus crystallization temperature and melting temperature versus crystallinity function. By this new approach five sub-peak sets were identified and then comprehensively characterised. Wide-Angle X-Ray Diffraction (WAXD) analyses revealed that the identified sub-peak sets do not differ in crystalline forms. By analysing the crystallinity and the melting temperature of the sub-peak sets as a function of crystallization time, crystallization temperature and intrinsic viscosity, it was concluded that below the crystallization temperature of 460 K the sub-peak sets that were formed during primary or secondary crystallization transform partially or completely to a third sub-peak set during the heating run of the measurement, while above this temperature, the sub-peak set formed during primary crystallization gradually transforms to a more stable structure, with higher melting temperature. These formations and transformations are described with mathematically defined parameters as well.

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Section: Crystalline Form Analysismentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Melting temperature versus crystallinity: new way for identification and analysis of multiple endotherms of poly(ethylene terephthalate)

et al. 2020

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“…The results proved that the recycled PET is more suitable as a 3D printing material than the pure PET. As a result, the waste 3D print PET filament was applied to prepare circuit boards [ 49 ], as shown in Figure 8 e,f.…”

Section: Circular Application Of 3d Printing Wastementioning

confidence: 99%

“… Direct reuse process diagram and products. ( a ) Recycling of Acrylonitrile Butadiene Styrene (ABS) adsorption material skeleton and adsorption process [ 48 ]; ( b ) carbon fiber recycling process of carbon fiber reinforced PLA [ 50 ]; ( c ) surface morphology of PLA composite with waste PLA [ 52 ]; ( d ) surface morphology of PLA composite with waste PLA after adding other materials [ 52 ]; ( e , f ) recycled PET 3D after printing as electronic devices [ 49 ]. …”

Section: Figurementioning

confidence: 99%

Realization of Circular Economy of 3D Printed Plastics: A Review

Zhu

Mohideen

et al. 2021

Polymers

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3D printing technology is a versatile technology. The waste of 3D printed plastic products is a matter of concern because of its impact on the circular economy. In this paper, we discuss the current status and problems of 3D printing, different methods of 3D printing, and applications of 3D printing. This paper focuses on the recycling and degradation of different 3D printing materials. The degradation, although it can be done without pollution, has restrictions on the type of material and time. Degradation using ionic liquids can yield pure monomers but is only applicable to esters. The reprocessing recycling methods can re-utilize the excellent properties of 3D printed materials many times but are limited by the number of repetitions of 3D printed materials. Although each has its drawbacks, the great potential of the recycling of 3D printed waste plastics is successfully demonstrated with examples. Various recycling approaches provide the additional possibility of utilizing 3D printing waste to achieve more efficient circular application.

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“…This work was aimed to set up a procedure to develop demonstrative actions, for instance, in schools or on beaches, devoted to increasing people awareness about the importance of recovering and recycling the marine plastic waste, and in general, following the same methodology, the plastic waste collected from other sources. Thanks to the small size of 3D printers, a true fabrication procedure with recycled plastic can be easily performed, producing a large variety of geometries in an easy way and in a short time [26].…”

Section: Introductionmentioning

confidence: 99%

3D Printing of Polymer Waste for Improving People’s Awareness about Marine Litter

Ferrari¹,

Corcione²,

Montagna³

et al. 2020

Polymers

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This work is aimed at proposing demonstrative actions devoted to show reprocessing and recyclability of PET originating from bottles collected from the seaside, in order to increase the consumer awareness on the importance of recycling plastics. To this purpose, collected bottles were washed, cut, grinded, extruded in the form of a thin wire adopting different cooling rates, which leads to a modulation of the crystallinity content. Once having optimized the processing parameters, the extruded wire was used to produce 3D printed samples through the fused deposition modelling (FDM). The changes in the crystalline structure due to the different processing conditions were assessed by DSC and XRD analyses, while rheological tests were performed in order to evaluate any modification in the viscosity of PET after repeated processing cycles. The reduction in thermal stability was confirmed by TGA analysis, which showed a progressive decrease in the degradation temperature as processing cycles increased. Finally, tensile tests highlighted the difference in the mechanical response due to the predominance of the crystalline or amorphous phase in the tested sample. In particular, a good mechanical behavior was found for the 3D-printed samples.

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Materials Selection of 3D Printing Filament and Utilization of Recycled Polyethylene Terephthalate (PET) in a Redesigned Breadboard

Cited by 54 publications

References 8 publications

Melting temperature versus crystallinity: new way for identification and analysis of multiple endotherms of poly(ethylene terephthalate)

Melting temperature versus crystallinity: new way for identification and analysis of multiple endotherms of poly(ethylene terephthalate)

Realization of Circular Economy of 3D Printed Plastics: A Review

3D Printing of Polymer Waste for Improving People’s Awareness about Marine Litter

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