| 초록 |
Polymer nanocomposites (PNCs) have been extensively investigated because they can introduce new features simply by introducing filler. Its performance will be decided by own filler properties and dispersion quality. Whereas most researches have been focusing on developing PNCs by the combination of polymer and filler or dispersion enhancement, less researches have been making for assessing dispersion qualification. In order to characterize PNC dispersion, rheological measurements are mostly used. Especially, SAOS test is well-known methods. Moreover, LAOS test has been received attention for PNC characterization. Lim et al.[1] suggested new parameter, NLR (Nonlinear linear viscoelastic ratio) from FT-rheology, to evaluate polycaprolactone nanocomposites. With this tool, we will evaluate the PNCs, we made, under well-dispersion control. Additionally, elongational rheology will be applied to further investigation for dispersion characterization. 1. Lim et al., J. Rheol., 57, 767 (2013). |
