dc.contributor.author |
Malkappa, Kuruma
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|
dc.contributor.author |
Bandyopadhyay, J
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|
dc.contributor.author |
Ray, Suprakas S
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|
dc.date.accessioned |
2019-03-05T10:03:15Z |
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dc.date.available |
2019-03-05T10:03:15Z |
|
dc.date.issued |
2018-10 |
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dc.identifier.citation |
Malkappa, K., Bandyopadhyay, J. and Ray, S.S. 2018. Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites. Molecules, vol. 23(10): https://doi.org/10.3390/molecules23102648 |
en_US |
dc.identifier.issn |
1420-3049 |
|
dc.identifier.uri |
https://www.mdpi.com/1420-3049/23/10/2648
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|
dc.identifier.uri |
https://doi.org/10.3390/molecules23102648
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/10743
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|
dc.description |
Open access article published in Molecules: https://doi.org/10.3390/molecules23102648 |
en_US |
dc.description.abstract |
Polylactide (PLA) is one of the most widely used organic bio-degradable polymers. However, it has poor flame retardancy characteristics. To address this disadvantage, we performed melt-blending of PLA with intumescent flame retardants (IFRs; melamine phosphate and pentaerythritol) in the presence of organically modified montmorillonite (OMMT), which resulted in nanobiocomposites with excellent intumescent char formation and improved flame retardant characteristics. Triphenyl benzyl phosphonium (OMMT-1)- and tributyl hexadecyl phosphonium (OMMT-2)-modified MMTs were used in this study. Thermogravimetric analysis in combination with Fourier transform infrared spectroscopy showed that these nanocomposites release a smaller amount of toxic gases during thermal degradation than unmodified PLA. Melt-rheological behaviors supported the conclusions drawn from the cone calorimeter data and char structure of the various nanobiocomposites. Moreover, the characteristic of the surfactant used for the modification of MMT played a crucial role in controlling the fire properties of the composites. For example, the nanocomposite containing 5 wt.% OMMT-1 showed significantly improved fire properties with a 47% and 68% decrease in peak heat and total heat release rates, respectively, as compared with those of unmodified PLA. In summary, melt-blending of PLA, IFR, and OMMT has potential in thedevelopment of high-performance PLA-based sustainable materials. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
MDPI |
en_US |
dc.relation.ispartofseries |
Worklist;22062 |
|
dc.subject |
Polylactides |
en_US |
dc.subject |
PLA |
en_US |
dc.subject |
Bio-degradable polymers |
en_US |
dc.subject |
Nanobiocomposites |
en_US |
dc.subject |
Polylactide nanocomposites |
en_US |
dc.subject |
Intumescent flame retardancy |
en_US |
dc.subject |
Synergistic effect |
en_US |
dc.title |
Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Malkappa, K., Bandyopadhyay, J., & Ray, S. S. (2018). Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites. http://hdl.handle.net/10204/10743 |
en_ZA |
dc.identifier.chicagocitation |
Malkappa, Kuruma, J Bandyopadhyay, and Suprakas S Ray "Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites." (2018) http://hdl.handle.net/10204/10743 |
en_ZA |
dc.identifier.vancouvercitation |
Malkappa K, Bandyopadhyay J, Ray SS. Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites. 2018; http://hdl.handle.net/10204/10743. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Malkappa, Kuruma
AU - Bandyopadhyay, J
AU - Ray, Suprakas S
AB - Polylactide (PLA) is one of the most widely used organic bio-degradable polymers. However, it has poor flame retardancy characteristics. To address this disadvantage, we performed melt-blending of PLA with intumescent flame retardants (IFRs; melamine phosphate and pentaerythritol) in the presence of organically modified montmorillonite (OMMT), which resulted in nanobiocomposites with excellent intumescent char formation and improved flame retardant characteristics. Triphenyl benzyl phosphonium (OMMT-1)- and tributyl hexadecyl phosphonium (OMMT-2)-modified MMTs were used in this study. Thermogravimetric analysis in combination with Fourier transform infrared spectroscopy showed that these nanocomposites release a smaller amount of toxic gases during thermal degradation than unmodified PLA. Melt-rheological behaviors supported the conclusions drawn from the cone calorimeter data and char structure of the various nanobiocomposites. Moreover, the characteristic of the surfactant used for the modification of MMT played a crucial role in controlling the fire properties of the composites. For example, the nanocomposite containing 5 wt.% OMMT-1 showed significantly improved fire properties with a 47% and 68% decrease in peak heat and total heat release rates, respectively, as compared with those of unmodified PLA. In summary, melt-blending of PLA, IFR, and OMMT has potential in thedevelopment of high-performance PLA-based sustainable materials.
DA - 2018-10
DB - ResearchSpace
DP - CSIR
KW - Polylactides
KW - PLA
KW - Bio-degradable polymers
KW - Nanobiocomposites
KW - Polylactide nanocomposites
KW - Intumescent flame retardancy
KW - Synergistic effect
LK - https://researchspace.csir.co.za
PY - 2018
SM - 1420-3049
T1 - Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites
TI - Thermal degradation characteristic and flame retardancy of polylactide-based nanobiocomposites
UR - http://hdl.handle.net/10204/10743
ER -
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en_ZA |