Perspective on the disposal of PVC artificial leather via pyrolysis: Thermodynamics, kinetics, synergistic effects and reaction mechanism

Mei-ling, XU; Cao, Chengyang; Hu, Hongyun; Ren, Yifeng; Guo, Guangzhao; Gong, Lifang; Zhang, Junwei; Zhang, Tong; Yao, Hong

doi:10.1016/j.fuel.2022.125082

Cited by 19 publications

(9 citation statements)

References 39 publications

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“…The kinetics of the thermal decomposition of wPVCf, which deals with the measurement and parameterization of the rates of weight loss originates by Equation :

wPVCf ((), solid) \vec{false} normalA ((), solid) goodbreak+ normalB ((), gas)

On heating wPVCf (Δ), the lower molecular mass compounds and adsorbed volatile organic chemicals (VOCs) were released following with decomposition and volatilization of the film. The rate of thermally stimulated decomposition weightloss processes (−dW/dt) expressed as derivative of TGA thermogram (−DTGA) of wPVCf initiated by the changes in temperature is parameterized by the extent of conversion (α), where (1−α) represents the residual amount of reactant, the mechanism of reaction represented as f (α) and a function of temperature (k(T)) in this case the Arrhenius rate constant as Equation 16,19,23,25,27,28,36 :

Rate goodbreak= \frac{d ((), 1 goodbreak- normalα)}{dt} goodbreak= goodbreak- k ((), T) . f ((), α) goodbreak= goodbreak- f ((), α) . normalA . Exp ((), goodbreak- \frac{E_{normala}}{RT})

where R = 8.314 J mol −1 K −1 is the universal gas constant and other symbols were defined previously. The decomposition mechanism involves several parallel and consecutive reactions that one of them is significantly slower than the others which determines the overall kinetics expressed by Equation .…”

Section: Theory: Kinetics Models Of the Thermal Decomposition Of Wpvcfmentioning

confidence: 99%

“…On heating wPVCf (Δ), the lower molecular mass compounds and adsorbed volatile organic chemicals (VOCs) were released following with decomposition and volatilization of the film. The rate of thermally stimulated decomposition weightloss processes (ÀdW/dt) expressed as derivative of TGA thermogram (ÀDTGA) of wPVCf initiated by the changes in temperature is parameterized by the extent of conversion (α), where (1Àα) represents the residual amount of reactant, the mechanism of reaction represented as f(α) and a function of temperature (k (T)) in this case the Arrhenius rate constant as Equation 2 16,19,23,25,27,28,36 :…”

Section: Theory: Kinetics Models Of the Thermal Decomposition Of Wpvcfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The kinetic study based on the thermogravimetric analysis (TGA) data which measure the apparent mass loss of a sample over time and temperature fall into two categories 16,19,23,25 : (i) pseudo-multi-component overall models (PMOM) and (ii) pseudo-single-component overall models (PSOM), 26 which was used in this study. The latest method regards the wPVCf as a single, pseudo-component to describe its kinetics of weight loss in the overall temperature range by the uses of the solid-gas reaction models.…”

Section: Introductionmentioning

confidence: 99%

“…It is known that the thermal decomposition of polymeric materials involves a large number of different reactions due to the conditions at high temperatures and the chemical complexity of the reactants before the observation of any weight losses. 16 This complexity has, in general, led researchers to study each polymer separately. 17 The kinetics and mechanism of the thermal decomposition of various resins, especially pure PVC, have been studied at varying levels of detail by numerous investigators.…”

Section: Introductionmentioning

confidence: 99%

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Upcycling poly(vinyl chloride) waste tubes: Studies of thermal stability and kinetics of films made of waste polyvinylchloride tube at the initial steps of degradation

Hamidi

2023

J of Applied Polymer Sci

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Polyvinylchloride (PVC) tubing products almost have replaced cast iron sewer and piping systems for water and wastewater collections; it also replaced metal and wood in window frames in construction. PVC has a high value, and its resin production continues to grow yearly at a considerable rate. Availability of the disposed or postconsumer PVC (wPVC) mimics a pseudo-renewable resource of wPVC, which creates many upcycling, recycling, and downcycling that result in many economic opportunities, besides reducing its burden on the environment while saving energy. This work presents the thermal characteristics of a film made of wPVC (wPVCf). Six samples of wPVCf were analyzed by its own heating, rate appropriate for kinetics properties evaluation, using a thermogravimetric analysis (TGA) instrument. The isoconversional degradation energy barrier (E a,α ) values were evaluated by applying 14 kinetic models, f(α), to the TGA data assuming that the degradation process follows a pseudosingle component model. The values of E α,α obtained from all models for each given α value were close to each other with a standard deviation of less than 0.1 kJ mol À1 indicating the validity of the method. The results were consistent with the kinetics data reported in the literature for pure PVC.

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“…The kinetics of the thermal decomposition of wPVCf, which deals with the measurement and parameterization of the rates of weight loss originates by Equation :

wPVCf ((), solid) \vec{false} normalA ((), solid) goodbreak+ normalB ((), gas)

Rate goodbreak= \frac{d ((), 1 goodbreak- normalα)}{dt} goodbreak= goodbreak- k ((), T) . f ((), α) goodbreak= goodbreak- f ((), α) . normalA . Exp ((), goodbreak- \frac{E_{normala}}{RT})

Section: Theory: Kinetics Models Of the Thermal Decomposition Of Wpvcfmentioning

confidence: 99%

Section: Theory: Kinetics Models Of the Thermal Decomposition Of Wpvcfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Upcycling poly(vinyl chloride) waste tubes: Studies of thermal stability and kinetics of films made of waste polyvinylchloride tube at the initial steps of degradation

Hamidi

2023

J of Applied Polymer Sci

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Effect of partial replacement of antimony trioxide with zinc borate and stannic oxide on the flame retardancy of flexible PVC films

Zhang,

Qian,

et al. 2024

J of Applied Polymer Sci

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Replacing antimony trioxide (Sb2O3) with an environmentally friendly alternative is of great scientific and commercial value for studying the flame retardant properties of flexible PVC (fPVC) films in automotive interior materials. This study develops flame retardant fPVC films with reduced Sb2O3 content by introducing stannic oxide (SnO2) and zinc borate (ZB). The results indicate that the fPVC film with ZB partially replacing Sb2O3 exhibits superior flame retardancy and smoke suppression compared to the product containing SnO2. The peak heat release rate (PHRR), total heat release (THR), and total smoke release (TSR) of 2ZB/2Sb2O3 fPVC film are reduced by 32.1%, 27.5%, and 22.1%, respectively, compared to that of 4Sb2O3 contained fPVC film. The increase in flame retardancy is attributed to the presence of ZB, which compensates for the deficiency of char formation ability of Sb2O3 in the condensed phase. The PHRR and THR of 2SnO2/2Sb2O3 fPVC film decrease by 27% and 12.5%, respectively, compared to that of 4Sb2O3 fPVC film, while the TSR increases by 16.5%. This study develops a straightforward approach to creating a flame retardant fPVC film that is suitable for the latest industrial application in automotive interior materials.

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Interaction and characteristics of furfural residues and polyvinyl chloride in fast co-pyrolysis

Zhang,

Li,

et al. 2024

Front. Chem. Sci. Eng.

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Perspective on the disposal of PVC artificial leather via pyrolysis: Thermodynamics, kinetics, synergistic effects and reaction mechanism

Cited by 19 publications

References 39 publications

Upcycling poly(vinyl chloride) waste tubes: Studies of thermal stability and kinetics of films made of waste polyvinylchloride tube at the initial steps of degradation

Upcycling poly(vinyl chloride) waste tubes: Studies of thermal stability and kinetics of films made of waste polyvinylchloride tube at the initial steps of degradation

Effect of partial replacement of antimony trioxide with zinc borate and stannic oxide on the flame retardancy of flexible PVC films

Interaction and characteristics of furfural residues and polyvinyl chloride in fast co-pyrolysis

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