Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes
Polyhydroxybutyrate (PHB) is a polymer with great application potential; however, its brittleness and low mechanical strength restrict its use in many fields. This study investigated a strategy to overcome the mechanical limitations of PHB by blending it with polycaprolactone (PCL) and producing nan...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2025-09-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | https://www.expresspolymlett.com/article.php?a=EPL-0013317 |
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| author | Alexandra Maria Cardona Loaiza Maria Eduarda Araújo Ribeiro Ruben J. Sanchez Rodriguez |
| author_facet | Alexandra Maria Cardona Loaiza Maria Eduarda Araújo Ribeiro Ruben J. Sanchez Rodriguez |
| author_sort | Alexandra Maria Cardona Loaiza |
| collection | DOAJ |
| description | Polyhydroxybutyrate (PHB) is a polymer with great application potential; however, its brittleness and low mechanical strength restrict its use in many fields. This study investigated a strategy to overcome the mechanical limitations of PHB by blending it with polycaprolactone (PCL) and producing nanocomposites with non-functionalized carbon nanotubes (CNT) and functionalized ones (f-CNT). The effect of blend composition and the addition of f-CNT were studied in hotpressed specimens. In PHB/30PCL blends, a reduction in the overall crystallinity degree was observed, while in PHB/10PCL the crystallinity maintained close to neat PHB. In PHB/10PCL nanocomposites, no significant change was registered, but in PHB/30PCL with f-CNT, the crystallinity degree increased and achieved values comparable to PHB. Differential scanning calorimetry suggested that f-CNT had a higher impact in PCL crystallinity in formulations of PHB/30PCL. Scanning electron microscopy showed that in these formulations, f-CNT were preferably located at the interface of PHB/PCL, while in PHB/10PCL the particles were mainly located in PHB. In general, the blends suffered with a reduction in elastic modulus and strength, especially for PHB/30PCL formulation. |
| format | Article |
| id | doaj-art-e1e67ded218e49ad9ee92722fd273b75 |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-e1e67ded218e49ad9ee92722fd273b752025-08-20T02:44:16ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2025-09-0119986287710.3144/expresspolymlett.2025.66Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubesAlexandra Maria Cardona LoaizaMaria Eduarda Araújo RibeiroRuben J. Sanchez RodriguezPolyhydroxybutyrate (PHB) is a polymer with great application potential; however, its brittleness and low mechanical strength restrict its use in many fields. This study investigated a strategy to overcome the mechanical limitations of PHB by blending it with polycaprolactone (PCL) and producing nanocomposites with non-functionalized carbon nanotubes (CNT) and functionalized ones (f-CNT). The effect of blend composition and the addition of f-CNT were studied in hotpressed specimens. In PHB/30PCL blends, a reduction in the overall crystallinity degree was observed, while in PHB/10PCL the crystallinity maintained close to neat PHB. In PHB/10PCL nanocomposites, no significant change was registered, but in PHB/30PCL with f-CNT, the crystallinity degree increased and achieved values comparable to PHB. Differential scanning calorimetry suggested that f-CNT had a higher impact in PCL crystallinity in formulations of PHB/30PCL. Scanning electron microscopy showed that in these formulations, f-CNT were preferably located at the interface of PHB/PCL, while in PHB/10PCL the particles were mainly located in PHB. In general, the blends suffered with a reduction in elastic modulus and strength, especially for PHB/30PCL formulation.https://www.expresspolymlett.com/article.php?a=EPL-0013317 poly(hydroxy alcanoate) poly(caprolactone) nanocomposites carbon nanotubeblends |
| spellingShingle | Alexandra Maria Cardona Loaiza Maria Eduarda Araújo Ribeiro Ruben J. Sanchez Rodriguez Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes eXPRESS Polymer Letters poly(hydroxy alcanoate) poly(caprolactone) nanocomposites carbon nanotube blends |
| title | Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes |
| title_full | Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes |
| title_fullStr | Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes |
| title_full_unstemmed | Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes |
| title_short | Thermo-mechanical characterization of PHB/PCL blend incorporated with carbon nanotubes |
| title_sort | thermo mechanical characterization of phb pcl blend incorporated with carbon nanotubes |
| topic | poly(hydroxy alcanoate) poly(caprolactone) nanocomposites carbon nanotube blends |
| url | https://www.expresspolymlett.com/article.php?a=EPL-0013317 |
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