Effect of the Hierarchical Structure in Poly(propylene)/Clay Composites on their Thermal Stability: From Single- to Multi-Step Degradation Processes
✍ Scribed by Humberto Palza; Mehrdad Yazdani-Pedram
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 470 KB
- Volume
- 295
- Category
- Article
- ISSN
- 1438-7492
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✦ Synopsis
Abstract
Composites with several hierarchical structures were prepared by using different clays, compatibilizers, and PPs. TGA showed that the thermal stability of the composites can be strongly improved, under either inert or thermo‐oxidative conditions, depending on the type of clay and its morphology. Drastic increases in the temperature of the maximum rate of weight loss (Δ__T__~peak~ ≈ 170 °C) under thermo‐oxidative conditions were observed depending on the clay dispersion. Furthermore, some composites had a complex multi‐step degradation behavior instead of a single‐step process related with different clay morphologies that can be present simultaneously. Finally, it was concluded that the TGA has a higher sensitivity toward the composite morphology than the mechanical properties.
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