Thermal Degradation Kinetics of iPP/Pd Nanocomposite Prepared by a Drying Process
Palladium (Pd) nanoparticles were incorporated into isotactic polypropylene (iPP) film by a one-step dry process.iPP film was exposed to the sublimed Pd(acac)2 vapor in a glass vessel at 180℃.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 35℃ by loading 0.27 wt% Pd nanoparticles.Thermal degradation activation energy (Ed) for iPP/Pd nanocomposite was 227.85kJ/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.
Pd nanoparticles polymer nanocomposite isotactic polypropylene thermal degradation Flynn & Wall equation
Jae-Young Lee Hong-Ki Lee Sung-Wan Hong Il-Yub Choi
Hydrogen Fuel Cell Parts and Applied Technology RIC Woosuk Univ., Wanju, Korea Dept.of Cosmetics, Woosuk Univ.Samnye, Korea Dept.of Enviro.Eng., Univ.of Seoul Seoul, Korea
国际会议
北京
英文
110-114
2012-10-26（万方平台首次上网日期，不代表论文的发表时间）