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Pyrolysis, kinetics...
Pyrolysis, kinetics and thermodynamic analyses of rice husks/clay fiber-reinforced polylactic acid composites using thermogravimetric analysis
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- Yiga, Vianney Andrew (författare)
- KTH,Fiber- och polymerteknologi,Department of Mechanical Engineering, Kabale University, Kabale, Uganda; Department of Mechanical Engineering, Makerere University, Kampala, Uganda
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- Lubwama, Michael (författare)
- Department of Mechanical Engineering, Makerere University, Kampala, Uganda; Africa Center of Excellence in Materials, Product Development and Nanotechnology, Makerere University, Kampala, Uganda
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- Olupot, Peter Wilberforce (författare)
- Department of Mechanical Engineering, Makerere University, Kampala, Uganda
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(creator_code:org_t)
- 2023-01-20
- 2023
- Engelska.
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Ingår i: Journal of thermal analysis and calorimetry (Print). - : Springer Nature. - 1388-6150 .- 1588-2926. ; 148:9, s. 3457-3477
- Relaterad länk:
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https://doi.org/10.1...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In the context of processing, utilization and disposal of polylactic acid composites, pyrolysis is a promising technique that addresses this complex synergy. In this work, pyrolysis kinetics and thermodynamic parameters of rice husks/clay fiber-reinforced PLA composites were investigated using Kissinger–Akahira–Sunose (KAS) and Ozawa–Flynn–Wall (OFW) at multiple heating rates (16, 25 and 34 °C min−1). PLA composites’ pyrolysis followed a single-step degradation process. The flammability indices, combustion characteristic indices and mean reactivities obtained for the PLA composites are much lower than those for neat PLA (2.00 × 10−5–2.44 × 10−5% min−1 °C−2, 0.87 × 10−8–1.79 × 10−8% min−2 °C−3 and 6.97 × 10−3–8.04 × 10−3% min−1 °C−1, respectively) which signals that rice husks and clay improved flame retardancy of accruing PLA composites. The average activation energy values obtained from the KAS method were found to be in ranges 137.83–143.99 kJ mol−1 and 124.51–133.95 kJ mol−1 for raw and modified rice husks/clay fiber-reinforced PLA composites, respectively. Corresponding activation energies for raw and modified rice husks/clay fiber-reinforced PLA composites from the OFW method were 141.24–146.92 kJ mol−1 and 128.17–137.50 kJ mol−1, respectively. By comparing activation energy and enthalpy, it was found that the composites were favored to format activated complex due to the low energy barrier.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- Fiber-reinforced PLA
- Kinetics
- Pyrolysis
- Rice husks
- Thermogravimetric analysis
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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