Multi Walled Carbon Nanotube Nanocomposites with Biodegradable Poly(butylene Succinate) and Their Physical Characteristics
| Autor: | Ko Sw, Haryeong Choi, Min Ki Hong, Jung-Kab Park, Ju-Jin Kim |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Chemical Phenomena Polymers Rheometer Biomedical Engineering Bioengineering Carbon nanotube Nanocomposites law.invention Microscopy Electron Transmission law General Materials Science Composite material Butylene Glycols Mechanical Phenomena Nanocomposite Nanotubes Carbon Electric Conductivity Percolation threshold General Chemistry Dynamic mechanical analysis Condensed Matter Physics Microstructure Biodegradable polymer Polybutylene succinate Microscopy Electron Scanning |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 11:5352-5357 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2011.3795 |
| Popis: | In order to examine the influence of multi walled carbon nanotube (MWNT) on physical properties of its biodegradable polymer nanocomposite, biodegradable poly(buthylene succinate) (PBS), which was synthesized from diols and dicarboxylic acids, and MWNT nanocomposites were prepared via a melt-mixing method using a co-rotating intermeshing twin screw extruder. Microstructure of the PBS/MWNT nanocomposites and MWNT were investigated via both scanning electron microscopy and transmission electron microscopy. Their rheological properties were also characterized via rotation and oscillation tests using a rotational rheometer with parallel-plate geometry. It was found that shear viscosity, storage modulus and loss modulus of the nanocomposites examined by a rotational rheometer increased with the MWNT content. Especially their sharp increase for MWNT content of ca. 2.0 wt% was observed, indicating its percolation threshold from the rheological viewpoint which was higher than its electrical percolation threshold (1.0 wt%). |
| Databáze: | OpenAIRE |
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