Study on thermal properties of poly(vinyl alcohol) and polyurethane composites with multiwalled carbon nanotubes/silica nanohybrids
| Autor: | Guanglian Zhou, Wei Liu, Hongdian Lu, Wei Yang, Jin Liu, Hongyan Xie, Qing Ye |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Vinyl alcohol
Materials science Sodium chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Multiwalled carbon 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Coating Thermal Ceramics and Composites engineering Composite material 0210 nano-technology Polyurethane |
| Zdroj: | Journal of Thermoplastic Composite Materials. 30:404-415 |
| ISSN: | 1530-7980 0892-7057 |
| DOI: | 10.1177/0892705715599434 |
| Popis: | Two kinds of multiwalled carbon nanotubes/silica nanohybrids (CNTs/SiO2) were synthesized via a sol–gel method by coating SiO2 on the surfaces of CNTs that had been functionalized with poly(sodium- p-styrenesulfonate) (PSS). The influence of the nanohybrids on the thermal properties of poly(vinyl alcohol) (PVA) and polyurethane (PU) composites was investigated. Characterization of CNTs/SiO2 nanohybrids, elucidated with scanning electron microscopy and X-ray diffraction, showed that PSS played a key role in the final morphology and resulted in a “core/shell” and “candied haws on a stick”-like structure. The thermal degradation and thermo-oxidation of PVA and PU composites evaluated by thermogravimetic analyses suggested that the thermal properties of PVA/(CNTs/SiO2) composites were improved at relative high temperature range when compared with pure PVA, and the improvement mainly depended on the loading fraction of the nanohybrids, while for PU/(CNTs/SiO2) composites, a small fraction of the nanohybrids increased the materials thermal properties, but the improvements were influenced by the type of CNTs/SiO2 nanohybrids. |
| Databáze: | OpenAIRE |
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