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Biocomposites with Size-Fractionated Biocarbon: Influence of the Microstructure on Macroscopic Properties
[Image: see text] This study is an experimental investigation of using biocarbon as renewable carbonaceous filler for engineering-plastic-based blends. Poly(trimethylene terephthalate) (PTT) and poly(lactic acid) (PLA) combined with a terpolymer were selected as the blend matrix. Biocarbon with vari...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2016
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640772/ https://www.ncbi.nlm.nih.gov/pubmed/31457153 http://dx.doi.org/10.1021/acsomega.6b00175 |
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author | Nagarajan, Vidhya Mohanty, Amar K. Misra, Manjusri |
author_facet | Nagarajan, Vidhya Mohanty, Amar K. Misra, Manjusri |
author_sort | Nagarajan, Vidhya |
collection | PubMed |
description | [Image: see text] This study is an experimental investigation of using biocarbon as renewable carbonaceous filler for engineering-plastic-based blends. Poly(trimethylene terephthalate) (PTT) and poly(lactic acid) (PLA) combined with a terpolymer were selected as the blend matrix. Biocarbon with various particle size ranges was segregated and used as filler. Depending on the particle size and aspect ratio of the biocarbon used, the microstructure of the composite was found to change. Composites having a biocarbon particle size range of 20–75 μm resulted in a morphology showing better dispersion of the blend components when compared with composites containing other biocarbon particle size ranges. Furthermore, the addition of epoxy-based multifunctional chain extender was found to result in much finer morphologies having dispersed polymer particles of very small size. Impact strength increased significantly in composites that possessed such morphologies favoring high energy dissipation mechanisms. A maximum notched Izod impact strength of 85 J/m was achieved in certain composite formulations, which is impressive considering the inherent brittleness of PTT and PLA. From rheological observations, incorporation of biocarbon increased viscosity, but the shear-thinning behavior of the matrix was preserved. By increasing the injection mold temperature, fast crystallization of PTT was achieved, which increased the heat deflection temperature of composites to 80 °C. This study shows that composites with overall improvement in mechanical and thermal performance can be produced by selecting biocarbon with appropriate particle sizes and suitable processing aids and conditions, which all together control the morphology and crystallinity. |
format | Online Article Text |
id | pubmed-6640772 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66407722019-08-27 Biocomposites with Size-Fractionated Biocarbon: Influence of the Microstructure on Macroscopic Properties Nagarajan, Vidhya Mohanty, Amar K. Misra, Manjusri ACS Omega [Image: see text] This study is an experimental investigation of using biocarbon as renewable carbonaceous filler for engineering-plastic-based blends. Poly(trimethylene terephthalate) (PTT) and poly(lactic acid) (PLA) combined with a terpolymer were selected as the blend matrix. Biocarbon with various particle size ranges was segregated and used as filler. Depending on the particle size and aspect ratio of the biocarbon used, the microstructure of the composite was found to change. Composites having a biocarbon particle size range of 20–75 μm resulted in a morphology showing better dispersion of the blend components when compared with composites containing other biocarbon particle size ranges. Furthermore, the addition of epoxy-based multifunctional chain extender was found to result in much finer morphologies having dispersed polymer particles of very small size. Impact strength increased significantly in composites that possessed such morphologies favoring high energy dissipation mechanisms. A maximum notched Izod impact strength of 85 J/m was achieved in certain composite formulations, which is impressive considering the inherent brittleness of PTT and PLA. From rheological observations, incorporation of biocarbon increased viscosity, but the shear-thinning behavior of the matrix was preserved. By increasing the injection mold temperature, fast crystallization of PTT was achieved, which increased the heat deflection temperature of composites to 80 °C. This study shows that composites with overall improvement in mechanical and thermal performance can be produced by selecting biocarbon with appropriate particle sizes and suitable processing aids and conditions, which all together control the morphology and crystallinity. American Chemical Society 2016-10-20 /pmc/articles/PMC6640772/ /pubmed/31457153 http://dx.doi.org/10.1021/acsomega.6b00175 Text en Copyright © 2016 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Nagarajan, Vidhya Mohanty, Amar K. Misra, Manjusri Biocomposites with Size-Fractionated Biocarbon: Influence of the Microstructure on Macroscopic Properties |
title | Biocomposites with Size-Fractionated Biocarbon: Influence
of the Microstructure on Macroscopic Properties |
title_full | Biocomposites with Size-Fractionated Biocarbon: Influence
of the Microstructure on Macroscopic Properties |
title_fullStr | Biocomposites with Size-Fractionated Biocarbon: Influence
of the Microstructure on Macroscopic Properties |
title_full_unstemmed | Biocomposites with Size-Fractionated Biocarbon: Influence
of the Microstructure on Macroscopic Properties |
title_short | Biocomposites with Size-Fractionated Biocarbon: Influence
of the Microstructure on Macroscopic Properties |
title_sort | biocomposites with size-fractionated biocarbon: influence
of the microstructure on macroscopic properties |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640772/ https://www.ncbi.nlm.nih.gov/pubmed/31457153 http://dx.doi.org/10.1021/acsomega.6b00175 |
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