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Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites

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dc.contributor.author Botlhoko, Orebotse J
dc.contributor.author Makwakwa, Dimakatso M
dc.contributor.author Ray, SS
dc.contributor.author Ramontja, J
dc.date.accessioned 2019-04-12T08:51:37Z
dc.date.available 2019-04-12T08:51:37Z
dc.date.issued 2018-12
dc.identifier.citation Botlhoko, O.J., Makwakwa, D.M., Ray, S.S., and Ramontja, J. 2018. Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites. Journal of Applied Polymer Science. doi.org/10.1002/app.47387. en_US
dc.identifier.issn 0021-8995
dc.identifier.issn 1097-4628
dc.identifier.uri goo.gl/1xmw28
dc.identifier.uri http://hdl.handle.net/10204/10965
dc.identifier.uri https://onlinelibrary.wiley.com/doi/full/10.1002/app.47387
dc.identifier.uri https://doi.org/10.1002/app.47387
dc.description Copyright: 2018 Wiley. Due to copyright restrictions, the attached PDF file only contains the abstract version of the full-text item. For access to the full-text item, please consult the publisher's website. The definitive version of the work is published in Journal of Applied Polymer Science, doi.org/10.1002/app.47387. en_US
dc.description.abstract Commodity polymers are the most widely used materials for electronic packaging applications. However, they are nondegradable and causing serious environmental damage. Addressing this challenge, the relative effects of graphite (G) and graphene oxide (GO) dispersion on the enzymatic degradation, electronic properties, thermal degradation, and crystallization behavior of enzyme degradable polylactide/poly(e-caprolactone) blend composites is investigated. Owing to the oxygenated surface functionalities and excellent thermal conductivity arising from the carbon structure, the randomly dispersed GO particles do not provide electrical pathways and facilitate large enhancements in the electrical resistivity (126%) and thermal conductivity (72%) of the blend composites. However, while the G particles enhanced the thermal conductivity of the composites, they had little effect on enzymatic degradation. Furthermore, they reduced the electrical resistivity, particularly at high concentration (0.25 wt % G), as a result of the conducting delocalized electrons in the G structure and due to network formation. We also find that the energy required to initiate and propagate the thermal degradation process for GO-filled blend composites is relatively lower than that of G-filled blend composite. However, the former composites show higher crystallization rate coefficients value than that of G-filled composites and the neat blend, thereby providing better crystallization ability and miscibility with the matrix. In summary, the G-filled blend composites are observed to show potential for use in sustainable materials for thermal management applications. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.relation.ispartofseries WorkFlow;22058
dc.subject Commodity polymers en_US
dc.subject Blend composites en_US
dc.subject Electronic packaging applications en_US
dc.title Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites en_US
dc.type Article en_US
dc.identifier.apacitation Botlhoko, O. J., Makwakwa, D. M., Ray, S., & Ramontja, J. (2018). Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites. http://hdl.handle.net/10204/10965 en_ZA
dc.identifier.chicagocitation Botlhoko, Orebotse J, Dimakatso M Makwakwa, SS Ray, and J Ramontja "Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites." (2018) http://hdl.handle.net/10204/10965 en_ZA
dc.identifier.vancouvercitation Botlhoko OJ, Makwakwa DM, Ray S, Ramontja J. Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites. 2018; http://hdl.handle.net/10204/10965. en_ZA
dc.identifier.ris TY - Article AU - Botlhoko, Orebotse J AU - Makwakwa, Dimakatso M AU - Ray, SS AU - Ramontja, J AB - Commodity polymers are the most widely used materials for electronic packaging applications. However, they are nondegradable and causing serious environmental damage. Addressing this challenge, the relative effects of graphite (G) and graphene oxide (GO) dispersion on the enzymatic degradation, electronic properties, thermal degradation, and crystallization behavior of enzyme degradable polylactide/poly(e-caprolactone) blend composites is investigated. Owing to the oxygenated surface functionalities and excellent thermal conductivity arising from the carbon structure, the randomly dispersed GO particles do not provide electrical pathways and facilitate large enhancements in the electrical resistivity (126%) and thermal conductivity (72%) of the blend composites. However, while the G particles enhanced the thermal conductivity of the composites, they had little effect on enzymatic degradation. Furthermore, they reduced the electrical resistivity, particularly at high concentration (0.25 wt % G), as a result of the conducting delocalized electrons in the G structure and due to network formation. We also find that the energy required to initiate and propagate the thermal degradation process for GO-filled blend composites is relatively lower than that of G-filled blend composite. However, the former composites show higher crystallization rate coefficients value than that of G-filled composites and the neat blend, thereby providing better crystallization ability and miscibility with the matrix. In summary, the G-filled blend composites are observed to show potential for use in sustainable materials for thermal management applications. DA - 2018-12 DB - ResearchSpace DP - CSIR KW - Commodity polymers KW - Blend composites KW - Electronic packaging applications LK - https://researchspace.csir.co.za PY - 2018 SM - 0021-8995 SM - 1097-4628 T1 - Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites TI - Enzymatic degradation, electronic, and thermal properties of graphite and graphene oxide-filled biodegradable polylactide/poly (å-caprolactone) blend composites UR - http://hdl.handle.net/10204/10965 ER - en_ZA


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