Kinetic Studies of Poly(ethylene terephthalate) Aminolysis Process without Catalyst

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Ghorbantabar Sedighah; GHIASS MAJID; BOUHENDI HOSSEIN; Yaghobi Nakisa

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Journal Paper

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Journal: Iranian Journal of Polymer Science and Technology Year:2021 | Volume:33 | Issue:5 Page(s): 435-443

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Information Journal Paper

Title

Kinetic Studies of Poly(ethylene terephthalate) Aminolysis Process without Catalyst

Author(s)

Ghorbantabar Sedighah | GHIASS MAJID | BOUHENDI HOSSEIN | Yaghobi Nakisa | Issue Writer Certificate

Keywords

poly(ethylene terephthalate)Q1

aminolysisQ2

chemical recyclingQ1

kineticsQ2

first-order reactionQ1

Abstract

Hypothesis: chemical recycling of poly(ethylene terephthalate) bottle waste and production of value-added materials are the most appropriate ways in accordance with the principles of sustainable development and environmental protection. To design and build industrial-scale recycling plants, kinetic data and the relationship between reaction rate and material concentration and temperature and, most importantly, the degradation reaction constant are required. Methods: chemical recycling of poly(ethylene terephthalate) was performed using more than five times the stoichiometric amount of monoethanolamine and without any catalyst. The product was characterized using the conventional polymer characterization methods such as Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric (TGA), and the elemental analysis. The aminolysis reaction was carried out at three temperatures of 120, 140, and 160° C and the kinetics of the aminolysis reaction and its relationship with temperature were determined by sampling and weighing the residual or unreacted amount of PET at consecutive times. Findings: Complete chemical degradation or aminolysis of poly(ethylene terephthalate) and its conversion to bis(hydroxyethyl) terephthalamide (BHETA) were performed in the presence of an excessive amount of monoethanolamine. The assumption of the first-order degree kinetics regime was used and its accuracy was confirmed by calculation error values. Experiments were performed at three temperatures to determine the rate of PET aminolysis reaction with respect to reaction temperature. Degradation of aminolysis under heating conditions using a jacket system for the reactor showed less activation energy than heating conditions with microwave radiation.

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APA: Copy

Ghorbantabar, Sedighah, GHIASS, MAJID, BOUHENDI, HOSSEIN, & Yaghobi, Nakisa. (2021). Kinetic Studies of Poly(ethylene terephthalate) Aminolysis Process without Catalyst. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 33(5 ), 435-443. SID. https://sid.ir/paper/389454/en

Vancouver: Copy

Ghorbantabar Sedighah, GHIASS MAJID, BOUHENDI HOSSEIN, Yaghobi Nakisa. Kinetic Studies of Poly(ethylene terephthalate) Aminolysis Process without Catalyst. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2021;33(5 ):435-443. Available from: https://sid.ir/paper/389454/en

IEEE: Copy

Sedighah Ghorbantabar, MAJID GHIASS, HOSSEIN BOUHENDI, and Nakisa Yaghobi, “Kinetic Studies of Poly(ethylene terephthalate) Aminolysis Process without Catalyst,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 33, no. 5 , pp. 435–443, 2021, [Online]. Available: https://sid.ir/paper/389454/en

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