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Published on: September 19, 2020
Millable polyurethane/organoclay nanocomposites: preparation, characterization, and properties
M Siliani1, M A López-Manchado, J L Valentín
1Institute of Polymer Science and Technology (CSIC), C/Juan de la Cierva, 3 28006-Madrid, Spain.
Journal of Nanoscience and Nanotechnology
|April 25, 2007
Summary
Novel millable polyurethane nanocomposites were created using organoclays. These enhanced polyurethane (PU) materials show improved properties due to nanofiller dispersion and varying clay interactions.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Polyurethane (PU) materials are versatile but can benefit from property enhancements.
- Nanocomposites offer improved material characteristics through the incorporation of nanofillers.
- Organoclays provide a tunable platform for creating polymer nanocomposites.
Purpose of the Study:
- To prepare novel millable polyurethane (PU)/organoclay nanocomposites.
- To investigate the effect of different organoclays on PU matrix properties.
- To analyze the interfacial interactions between organoclays and the PU matrix.
Main Methods:
- Conventional transformation techniques for nanocomposite preparation.
- X-ray diffraction (XRD) and transmission electron microscopy (TEM) for dispersion analysis.
- Mechanical and barrier property testing of the resulting nanocomposites.
Main Results:
- Successful preparation of PU/organoclay nanocomposites with nanoscale filler dispersion.
- Significant improvement in PU properties observed with small amounts of organoclay.
- Differential interfacial interactions (covalent vs. physical) between organoclays and PU matrix.
Conclusions:
- Organoclay addition substantially enhances millable polyurethane properties.
- The nature of interfacial interaction (covalent for C30B, physical for C15A) dictates macroscopic properties.
- These nanocomposites represent a promising advancement in materials engineering.
