Reza Salehiyan
Effect of organoclay on non-linear rheological properties of poly(lactic acid)/poly(caprolactone) blends
Salehiyan, Reza; Hyun, Kyu
Authors
Kyu Hyun
Abstract
The nonlinear viscoelastic properties of PLA/PCL blends with and without clay (montmorillonite, MMT) under large amplitude oscillatory shear (LAOS) flow were investigated. The G′ and G″ as a function of strain amplitude, Lissajous plots and FT-rheology methods were used to interpret nonlinear behavior of PLA/PCL blends with and without MMT. Additionally, scanning electron microscopy (SEM) images of PLA/PCL with MMT blends were taken to investigate the effects of clay on the internal structure of the PLA/PCL blends. A relationship between morphological changes and linear and nonlinear rheological properties was observed. SEM image analysis revealed that clay acted as a compatibilizer and then reduced the size of droplets in the PCL domain of the PLA matrix. As a result, nonlinear properties sensitively reflect morphological changes with increasing MMT amount. The nonlinear rheological properties of PLA/PCL/MMT/metallocene-LLDPE (mLLDPE) were also investigated when mLLDPE was used as an impact modifier to improve mechanical properties, and the nonlinear rheological properties of PLA/PCL/MMT and PLA/PCL/MMT/mLLDPE were also compared.
Citation
Salehiyan, R., & Hyun, K. (2013). Effect of organoclay on non-linear rheological properties of poly(lactic acid)/poly(caprolactone) blends. Korean Journal of Chemical Engineering, 30(5), 1013-1022. https://doi.org/10.1007/s11814-013-0035-6
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 3, 2013 |
Online Publication Date | Apr 20, 2013 |
Publication Date | 2013-05 |
Deposit Date | Jan 30, 2023 |
Journal | Korean Journal of Chemical Engineering |
Print ISSN | 0256-1115 |
Publisher | Springer |
Peer Reviewed | Peer Reviewed |
Volume | 30 |
Issue | 5 |
Pages | 1013-1022 |
DOI | https://doi.org/10.1007/s11814-013-0035-6 |
Keywords | LAOS, Nonlinear Viscoelastic Properties, FT-rheology, PLA/PCL Blends, PLA/PCL/MMT, PLA/PCL/MMT/mLLDPE |
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