Dymanic mechanical analysis of polyvinylalcohol/silica nanocomposite
Data(s) |
20/09/2005
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Resumo |
Polyvinylalcohol/Silica (PVA/SiO<sub>2</sub>) nanocomposites with different SiO<sub>2</sub> contents are synthesized by employing a novel self-assembly monolayer (SAM) technique. The influence of the silica on dynamic mechanical properties of the nanocomposites is investigated by conducting dynamic mechanical analysis (DMA) and quasi-thermal mechanical analysis (Q-TMA). It is found that the storage modulus (E′), loss factor (tga), glass transition temperature (T<sub>g</sub>), and activation energy (E<sub>a</sub>) of prepared nanocomposites all show a strong dependence on the SiO<sub>2</sub> content. The Q-TMA results indicate that under a constant force, the elasticity of nanocomposites decreases with SiO<sub>2</sub> content, and the softening temperature moves to a higher temperature when more SiO<sub>2</sub> is added.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier |
Relação |
http://dro.deakin.edu.au/eserv/DU:30006637/n20071139.pdf http://dx.doi.org/10.1016/j.synthmet.2005.07.098 |
Direitos |
2005 Elsevier B.V. |
Palavras-Chave | #polyvinylalcohol #silica #nanocomposites #Dynamic mechanical analysis (DMA) |
Tipo |
Journal Article |