Attaining Toughness and Reduced Electrical Percolation Thresholds in Bio-Based PA410 by Combined Addition of Bio-Based Thermoplastic Elastomers and CNTs
| العنوان: | Attaining Toughness and Reduced Electrical Percolation Thresholds in Bio-Based PA410 by Combined Addition of Bio-Based Thermoplastic Elastomers and CNTs |
|---|---|
| المؤلفون: | G. Guerrica-Echevarría, Itziar Otaegi, Nora Aranburu |
| المصدر: | Polymers Volume 13 Issue 19 Addi. Archivo Digital para la Docencia y la Investigación instname Polymers, Vol 13, Iss 3420, p 3420 (2021) |
| بيانات النشر: | MDPI, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Polymers and Plastics, Organic chemistry, thermoplastic elastomer, Carbon nanotube, Article, law.invention, chemistry.chemical_compound, QD241-441, law, biopolymer, Thermoplastic elastomer, Composite material, carbon nanotube, Nanocomposite, polyamide, nanocomposite, electrical conductivity, toughness, Percolation threshold, Izod impact strength test, General Chemistry, blend, chemistry, Percolation, Masterbatch, Polymer blend |
| الوصف: | Multi-walled carbon nanotubes (CNTs) were added to provide electrical conductivity to bio-based polymer blends with improved toughness (based on commercially available Pebax thermoplastic elastomers and bio-based polyamide 4,10). A preliminary study including three different Pebax grades was carried out to select the grade and the composition that would best improve the impact properties of PA410. Thus, tough multiphasic PA/Pebax/CNT nanocomposites (NCs) with enhanced electrical conductivity were obtained. The CNTs were added either: (1) in the form of pristine nanotubes or (2) in the form of a PA6-based masterbatch. Hence, PA410/Pebax/CNT ternary NCs and PA410/PA6/Pebax/CNT quaternary NCs were obtained, respectively, up to a CNT content of 1 wt%. The ternary and quaternary NCs both showed similar mechanical and electrical properties. The electrical percolation threshold decreased with respect to previously studied corresponding NCs without Pebax, i.e., PA410/CNT and PA410/PA6/CNT, due to the partial volume exclusion effect of Pebax over the CNTs that were dispersed mainly in the PA matrix materials with percolation concentrations as low as 0.38 wt% were obtained. With respect to mechanical properties, contrary to the NCs without Pebax, all the PA/Pebax/CNT NCs showed a ductile behavior and impact strength values that were from three to five-fold higher than that of the pure PA410. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a675e2e02441f91caf6eec869a6917db http://hdl.handle.net/10810/53475 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a675e2e02441f91caf6eec869a6917db |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |