Nanostructure morphology and dynamic rheological properties of nanocomposites based on thermoplastic polyurethane and organically modified montmorillonite |
| |
Authors: | A K Barick D K Tripathy |
| |
Affiliation: | (1) Rubber Technology Centre, Indian Institute of Technology, Kharagpur, 721302, West Bengal, India |
| |
Abstract: | Thermoplastic polyurethane (TPU) nanocomposites based on organophilic-layered silicates were prepared via melt blending. Wide
angle X-ray diffraction (WAXD) and transmission electron microscope (TEM) were employed to investigate the state and mechanism
of exfoliation of the layered silicate within TPU matrix. The TPU nanocomposites were found to have a partially exfoliated
morphology at lower clay loading, whereas the morphology changed to an intercalated nanostructure at higher clay loadings.
The effect of the state of dispersion of organoclay on rheological properties of the nanocomposites were carried out by rubber
process analyzer (RPA), which exhibited more pronounced shear thinning behavior, and increased storage and loss modulus with
the increase in organoclay content. The pseudo-plastic like behavior was observed due to change in liquid-like to solid-like
behavior of nanoclay-filled systems. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|