Enhanced Functional Properties of Low-Density Polyethylene Nanocomposites Containing Hybrid Fillers of Multi-Walled Carbon Nanotubes and Nano Carbon Black
| Autor: | Rafal Stanik, Jan Subocz, Sandra Paszkiewicz, Jedrzej Szczepaniak, Anna Szymczyk, Agata Zubkiewicz |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope nano carbon black chemistry.chemical_element Carbon nanotube Article law.invention lcsh:QD241-441 chemistry.chemical_compound Thermal conductivity lcsh:Organic chemistry law Ultimate tensile strength thermal conductivity Composite material Nanocomposite carbon nanotubes electrical conductivity low-density polyethylene nanocomposites hybrid carbon nanofillers General Chemistry Polyethylene Low-density polyethylene chemistry Carbon |
| Zdroj: | Polymers Volume 12 Issue 6 Polymers, Vol 12, Iss 1356, p 1356 (2020) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym12061356 |
| Popis: | In this work, hybrid filler systems consisting of multi-walled carbon nanotubes (MWCNTs) and nano carbon black (nCB) were incorporated by melt mixing in low-density polyethylene (LDPE). To hybrid systems a mixture of MWCNTs and nCB a mass ratio of 1:1 and 3:1 were used. The purpose was to study if the synergistic effects can be achieved on tensile strength and electrical and thermal conductivity. The dispersion state of carbon nanofillers in the LDPE matrix has been evaluated with scanning electron microscopy. The melting and crystallization behavior of all nanocomposites was not significantly influenced by the nanofillers. It was found that the embedding of both types of carbon nanofillers into the LDPE matrix caused an increase in the value of Young&rsquo s modulus. The results of electrical and thermal conductivity were compared to LDPE nanocomposites containing only nCB or only MWCNTs presented in earlier work LDPE/MWCNTs. It was no synergistic effects of nCB in multi-walled CNTs and nCB hybrid nanocomposites regarding mechanical properties, electrical and thermal conductivity, and MWCNTs dispersion. Since LDPE/MWCNTs nanocomposites exhibit higher electrical conductivity than LDPE/MWCNTs + nCB or LDPE/nCB nanocomposites at the same nanofiller loading (wt.%), it confirms our earlier study that MWCNTs are a more efficient conductive nanofiller. The presence of MWCNTs and their concentration in hybrid nanocomposites was mainly responsible for the improvement of their thermal conductivity. |
| Databáze: | OpenAIRE |
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