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Palladium Pd nanoparticles were incorporated into isotactic polypropylene iPP film by a one-step dry process. iPP film was exposed to the sublimed Pdacac2 vapor in a glass vessel at 180oC. The Pd nanoparticles were observed by transmission electron microscope TEM, and it was found that metallic nanoparticles were selectively loaded on the amorphous regions between the lamellae in iPP. Thermal degradation kinetics was investigated by introducing the data of thermogravimetric analysis TGA to Flynn & Wall equation. TGA data showed that thermal degradation temperature Td of the neat iPP was improved about 35oC by loading 0.27 wt% Pd nanoparticles. Thermal degradation activation energy Ed for iPP-Pd nanocomposite was 227.85 kJ-mol while that of neat iPP was 220.57 kJ-mol. These results meant that the Pd nanoparticles acted as a retardant in the thermal degradation of neat iPP polymer chain.

KEYWORDS

Pd Nanoparticles; Polymer Nanocomposite; Isotactic Polypropylene; Thermal Degradation; Flynn & Wall Equation

Cite this paper

Y. Lee, H. Lee, S. Hong and I. Choi -Thermal Degradation Kinetics of iPP-Pd Nanocomposite Prepared by a Drying Process,- Advances in Materials Physics and Chemistry, Vol. 2 No. 4B, 2012, pp. 110-114. doi: 10.4236-ampc.2012.24B030.





Autor: Y Jae-Young Lee, Hong-Ki Lee, Sung-Wan Hong, Il-Yub Choi

Fuente: http://www.scirp.org/



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