Behaviour of waste polypropylene pyrolysis char-based epoxy composite materials

Sogancioglu, Merve; Yel, Esra; Ahmetli, Gülnare

doi:10.1007/s11356-019-07028-3

Cited by 46 publications

(32 citation statements)

References 48 publications

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“…It can be concluded that there are one and two pyrolysis stages for IB and NOC pyrolysis, respectively. Previous studies show there are one and two weightlessness stages for PP and PVC pyrolysis, respectively [8,9,33,34]. The results are consistent with the results obtained of IB and NOC pyrolysis.…”

Section: Thermogravimetric and Differential Thermogravimetry Analysissupporting

confidence: 90%

Insights into Thermal Degradation Behaviors and Reaction Kinetics of Medical Waste Infusion Bag and Nasal Oxygen Cannula

Zhang

Jiang

et al. 2020

Processes

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The thermal degradation behaviors and reaction kinetics of medical waste infusion bag (IB) and nasal oxygen cannula (NOC) were investigated under inert atmosphere with the heating rates of 5, 10, 15, and 25 K·min−1. Ozawa–Flynn–Wall (OFW), Kissinger–Akahira–Sunose (KAS), and Friedman were employed to estimate the activation energy. Coats–Redfern and Kennedy–Clark methods were adopted to predict the possible reaction mechanism. The results suggested that the reaction mechanism of IB pyrolysis was zero-order, and that of NOC pyrolysis was concluded that zero-order for the first stage and three-dimensional diffusion Jander equation for the second stage. Based on the kinetic compensation effect, the reconstructed reaction models for IB and NOC pyrolysis were elaborated by introducing adjustment functions. The results indicated that the reconstructed model fitted well with the experimental data. The results are helpful as a reference and provide guidance for the determination of IB and NOC degradation behaviors and the simulation of parameters.

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Section: Thermogravimetric and Differential Thermogravimetry Analysissupporting

confidence: 90%

Insights into Thermal Degradation Behaviors and Reaction Kinetics of Medical Waste Infusion Bag and Nasal Oxygen Cannula

Zhang

Jiang

et al. 2020

Processes

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“…Vibrations in C–O, C=C, and C–C–O within the char and SPS provide one of the most pronounced bands in the area, between 1031 and 1034 cm −1 . Sogancioglu et al [ 41 ] mentioned that the distinct peaks in the spectral regions between 800 and 900 cm −1 , and 700 and 800 cm −1 represent p-disubstituted benzene aromatic C–H and alkene groups. The distinct peaks at 876 cm −1 and 723 cm −1 were observed from the IR spectra, respectively.…”

Section: Resultsmentioning

confidence: 99%

Development and Characterization of Polypropylene Waste from Personal Protective Equipment (PPE)-Derived Char-Filled Sugar Palm Starch Biocomposite Briquettes

et al. 2021

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Slow pyrolysis using a batch reactor at 450 °C was applied to the polypropylene (PP) powder derived from Coronavirus Disease 2019 (COVID-19) isolation gown waste to yield char briquettes, using sugar palm starch (SPS) and a manual hydraulic press. These studies are significant because of reductions in plastic waste from the preparation of barbecue coal due to environmental sustainability. The results presented here include the physical, morphological, thermal, combustion, and mechanical properties of char when reinforced with various percentages of SPS loadings (0, 10, 20, 30, and 40%), which act as a matrix/binder to produce char/sugar palm starch (C/SPS) composites. The physical and morphological characteristics of C/SPS composites were determined using Fourier transform infrared (FTIR) and field emission scanning electron microscopy (FESEM). On the other hand, the thermal and combustion properties of the C/SPS briquettes were studied via thermogravimetric and bomb calorimeter analysis. The results show that the compressive strength of the briquettes increased as the SPS loading increased, whereas the higher heating values (HHV) reduced. The findings indicate that C-80/SPS-20 briquettes presented excellent combustion characteristics (1,761,430 J/g) with satisfactory mechanical strength (1.463 MPa) in the compression test. Thus, C-80/SPS-20 briquettes are the most suitable composites for domestic and commercial uses.

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“…The FTIR spectral curve of PPC is presented in Fig 3 for 600-2000 cm -1 range. The observed FTIR spectral peaks for PPC are identified based on past literature [33,34]. The https://doi.org/10.1371/journal.pone.0248465.g001…”

Section: Methodsmentioning

confidence: 99%

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

2021

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Pyrolysis has gained a strong interest in recent times for sustainable treatment and recovery of energy-rich products from different wastes including plastic. Waste plastic pyrolytic char (PPC) generated as a carbonaceous by-product in the pyrolysis process, is gaining attention as an asphalt binder modifier. Adequate thermal storage stability is an essential requirement for a modified asphalt binder to ensure that the composite offers integrity and homogeneous properties during its storage, handling and transportation in the field. The objective of this study was to evaluate and characterize the thermal storage stability properties of PPC modified binders. PPC modified asphalt binders were fabricated and evaluated at multiple dosages of sulfur as a cross-linking agent. In addition to the conventionally used softening point difference (SPD), characterization of thermal storage stability was attempted using rheology-based separation indices (SIs) derived through temperature sweep, frequency sweep, and multiple stress creep and recovery (MSCR) tests. These rheological SIs were based on complex modulus (G*), Superpave rutting parameter (G*/sin δ), Shenoy rutting parameter (SRP), zero shear viscosity (ZSV), and MSCR Jnr (at three stress levels 0.1, 3.2 and 10 kPa). Two formulations of each rheology-based separation index were studied: (1) ratio, and (2) maximum-average difference formulations. The temperature and frequency dependencies of rheological SIs were also evaluated. Further, the Fourier transform infrared spectroscopy (FTIR) was used to characterize storage stability by comparing the chemical functionalities of the PPC modified binders. A 0.3% dosage of sulfur was found to produce the best results considering all SPD, rheology-based SIs and FTIR. Principal component analysis showed that the ratio and maximum-average formulations had similar contributions to the first principal component accounting for more than 99% of the variability.

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Behaviour of waste polypropylene pyrolysis char-based epoxy composite materials

Cited by 46 publications

References 48 publications

Insights into Thermal Degradation Behaviors and Reaction Kinetics of Medical Waste Infusion Bag and Nasal Oxygen Cannula

Insights into Thermal Degradation Behaviors and Reaction Kinetics of Medical Waste Infusion Bag and Nasal Oxygen Cannula

Development and Characterization of Polypropylene Waste from Personal Protective Equipment (PPE)-Derived Char-Filled Sugar Palm Starch Biocomposite Briquettes

Characterization of thermal storage stability of waste plastic pyrolytic char modified asphalt binders with sulfur

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