Please use this identifier to cite or link to this item: https://doi.org/10.3390/molecules26061597
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dc.titleThermal degradation kinetics and modeling study of ultra high molecular weight polyethylene (Uhmwp)/graphene nanocomposite
dc.contributor.authorJafari, Iman
dc.contributor.authorShakiba, Mohamadreza
dc.contributor.authorKhosravi, Fatemeh
dc.contributor.authorRamakrishna, Seeram
dc.contributor.authorAbasi, Ehsan
dc.contributor.authorTeo, Ying Shen
dc.contributor.authorKalaee, Mohammadreza
dc.contributor.authorAbdouss, Majid
dc.contributor.authorAhmad Ramazani, S.A.
dc.contributor.authorMoradi, Omid
dc.contributor.authorGhomi, Erfan Rezvani
dc.date.accessioned2022-10-12T08:08:42Z
dc.date.available2022-10-12T08:08:42Z
dc.date.issued2021-03-13
dc.identifier.citationJafari, Iman, Shakiba, Mohamadreza, Khosravi, Fatemeh, Ramakrishna, Seeram, Abasi, Ehsan, Teo, Ying Shen, Kalaee, Mohammadreza, Abdouss, Majid, Ahmad Ramazani, S.A., Moradi, Omid, Ghomi, Erfan Rezvani (2021-03-13). Thermal degradation kinetics and modeling study of ultra high molecular weight polyethylene (Uhmwp)/graphene nanocomposite. Molecules 26 (6) : 1597. ScholarBank@NUS Repository. https://doi.org/10.3390/molecules26061597
dc.identifier.issn1420-3049
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232500
dc.description.abstractThe incorporation of nanofillers such as graphene into polymers has shown significant improvements in mechanical characteristics, thermal stability, and conductivity of resulting polymeric nanocomposites. To this aim, the influence of incorporation of graphene nanosheets into ultra-high molecular weight polyethylene (UHMWPE) on the thermal behavior and degradation kinetics of UHMWPE/graphene nanocomposites was investigated. Scanning electron microscopy (SEM) analysis revealed that graphene nanosheets were uniformly spread throughout the UHMWPE’s molecular chains. X-Ray Diffraction (XRD) data posited that the morphology of dispersed graphene sheets in UHMWPE was exfoliated. Non-isothermal differential scanning calorimetry (DSC) studies identified a more pronounced increase in melting temperatures and latent heat of fusions in nanocomposites compared to UHMWPE at lower concentrations of graphene. Thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) revealed that UHMWPE’s thermal stability has been improved via incorporating graphene nanosheets. Further, degradation kinetics of neat polymer and nanocomposites have been modeled using equations such as Friedman, Ozawa–Flynn–Wall (OFW), Kissinger, and Augis and Bennett’s. The "Model-Fitting Method” showed that the auto-catalytic nth-order mechanism provided a highly consistent and appropriate fit to describe the degradation mechanism of UHMWPE and its graphene nanocomposites. In addition, the calculated activation energy (Ea ) of thermal degradation was enhanced by an increase in graphene concentration up to 2.1 wt.%, followed by a decrease in higher graphene content. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
dc.publisherMDPI AG
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.subjectGraphene
dc.subjectModeling
dc.subjectNanocomposite
dc.subjectThermal degradation
dc.subjectThermal properties
dc.subjectUltra-high molecular weight polyethylene
dc.typeArticle
dc.contributor.departmentCOLLEGE OF DESIGN AND ENGINEERING
dc.description.doi10.3390/molecules26061597
dc.description.sourcetitleMolecules
dc.description.volume26
dc.description.issue6
dc.description.page1597
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