Effect of Weathering and Accelerated Photoaging on PET/PC (80/20 wt/wt%) Melt Extruded Blend

Pires, Homero Modesto; Mendes, Luís Claudio; Cestari, Sibele Piedade; Pita, Victor Jayme Roget Rodriguez

doi:10.1590/1516-1439.010115

Cited by 23 publications

(4 citation statements)

References 16 publications

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“…Carbonyl peaks were read at 1715 -1735 cm -1 . Reference peaks, based on the literature, were 1471 cm -1 for PE (LDPE, HDPE, PE), 1458 cm -1 for PP, 1452 cm -1 for PS and EPS (Rodrigues et al 2018), 1504 cm -1 for PET (Pires et al 2015), 1328 cm -1 for PVC (Balakit et al 2015), 1030 cm -1 for CA (Sakai et al 1996), and 1464 cm -1 for nylon (Cai et al 2017) (Table S-1 and S-2, S.I.). The spectra of some organic matter samples were also recorded for future reference (Figure S-1, S.I.).…”

Section: Resistance Of Polymers To Digestion Protocolsmentioning

confidence: 96%

Identifying a quick and efficient method of removing organic matter without damaging microplastic samples

Prata

Costa

Girão

et al. 2019

Science of The Total Environment

237

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Section: Resistance Of Polymers To Digestion Protocolsmentioning

confidence: 96%

Identifying a quick and efficient method of removing organic matter without damaging microplastic samples

Prata

Costa

Girão

et al. 2019

Science of The Total Environment

237

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“…Evidently, the addition of PET has affected the material properties, mainly improving the mechanical integrity and thermal resistivity, thereby making PET a high-quality polyester to recycle consecutively. Additionally, repeated recycling of PET is reported to have produced comparable results to virgin PET in terms of material characteristics, supporting its recycling as a good alternative for plastic waste disposal 19 .…”

Section: Introductionmentioning

confidence: 70%

Ionic Liquid Potential to Recycle Polymeric Waste: An Experimental Investigation

et al. 2020

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The impact of ionic liquid (IL) solution on the recycling process of polyethylene terephthalate (PET) waste containers used to store drinking water, with a focus on optimizing the added percentage and processing conditions of IL was studied. Characterization using differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA), Fourier transform infrared spectroscopy (FTIR) and nano-indentation tests were performed. Generally, an increase in the degradation temperatures was observed with increasing IL%. Since they were quite comparable, their good thermal stability could be considered. An increase in the hardness was noticed from 0.41 at 0% to 0.45 at a 2% IL solution. A rise in the modulus of elasticity was also observed from 5.5 GPa at 0% to 8 GPa at 2% IL solution. Although there has been some improvement in the properties of the IL blends, limitations such as IL cost and their effective recycling remains a challenge and needs more efforts to fully explore their potential.

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“…The infrared spectra of pure PET, PET-nTiO 2 -R, PET-nTiO 2 -A, and PET-nSiC are shown in Figure 4 . The intensity of the spectra was normalized with a reference peak, the IR band at 1408 cm −1 , since it is assigned to the benzene ring of PET, which is not expected to be affected by aging [ 40 , 41 , 42 ] This normalization method allows a proper comparison of the absorption intensity of characteristic bands showing some structural changes during accelerated aging in the 750–1800 cm −1 range. An increase in the intensity of characteristic peaks of PET was noted, that is, in the aromatic ester C=O stretch (1717 cm −1 ), aromatic ester C-C-O stretch (1255 cm −1 ), and aromatic ester O-C-C stretch (1100 cm −1 ) [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Accelerated Aging on the Molecular Weight and Thermal and Mechanical Properties of Polyester Yarns Containing Ceramic Particles

2023

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The accelerated aging of polyethylene terephthalate (PET) multifilament yarns containing nano or microparticles of titanium dioxide (TiO2), silicon carbide (SiC), or fluorite (CaF2) at a maximum percentage of 2% has been studied. For this, the yarn samples were introduced into a climatic chamber at 50 °C, 50% relative humidity, and an ultraviolet A (UVA) irradiance of 1.4 W/m2. They were then removed from the chamber after periods of between 21 and 170 days of exposure. Subsequently, the variation in weight average molecular weight, number molecular weight, and polydispersity was evaluated by gel permeation chromatography (GPC), the surface appearance was evaluated using scanning electron microscopy (SEM), the thermal properties were evaluated using differential scanning calorimetry (DSC), and the mechanical properties were evaluated using dynamometry. The results showed that, at the test conditions, there was degradation in all of the exposed substrates, possibly due to the excision of the chains that make up the polymeric matrix, which resulted in the variation in the mechanical and thermal properties depending on the type and size of the particle used. This study provides insight into the evolution of the properties of PET-based nano- and microcomposites and might be helpful when selecting materials for specific applications, which is of great interest from an industrial point of view.

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Effect of Weathering and Accelerated Photoaging on PET/PC (80/20 wt/wt%) Melt Extruded Blend

Cited by 23 publications

References 16 publications

Identifying a quick and efficient method of removing organic matter without damaging microplastic samples

Identifying a quick and efficient method of removing organic matter without damaging microplastic samples

Ionic Liquid Potential to Recycle Polymeric Waste: An Experimental Investigation

The Effect of Accelerated Aging on the Molecular Weight and Thermal and Mechanical Properties of Polyester Yarns Containing Ceramic Particles

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