【摘 要】
：
Polystyrene/iron-nickel (PS/FeNi3)nanocomposites were synthesized via an in-situ polymerization route and characterized by XRD, SEM and FTIR. FeNi3 nanoparticle
【机 构】
：
State Key Laboratory of Crystal Materials and Institute of Crystal Materials,Department of Material
【基金项目】
：
the National Natural Foundation of China
论文部分内容阅读
Polystyrene/iron-nickel (PS/FeNi3)nanocomposites were synthesized via an in-situ polymerization route and characterized by XRD, SEM and FTIR. FeNi3 nanoparticles werecharacterized by TEM and XRD. The pure FeNi3 nanoparticles (100～125 nm)were highly clustered and percolated through the PS matrix. When the content of FeNi3 nanoparticles reached 5 wt%, an interaction between FeNi3 nanoparticles and PS matrix was observed. The thermal decomposition behavior of PS/FeNi3 nanocomposites was investigated by thermal analysis. The activation energies (E)and pre-exponential factors (InA)were calculated by using Archar method. The results show that the thermal decomposition of pure PS is a one-dimensional diffusion mechanism. A three-dimensional diffusion mechanism appears when FeNi3 nanoparticles incorporate. The E of PS/FeNi3 nanocomposites with different FeNi3 contents is 217.5, 225.3, 180.6 and 73.0 kJ·mol-1,and the corresponding InA is 35.6,34.9,27.5 and 10.4 S-1,respectively.
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