Effect of fullerene content on the thermal, microstructure, and electrokinetic properties of fullerene/poly(vinyl pyrrolidone) nanofluids and nanocomposites

1st International Conference on Advanced Engineering Functional Materials

Behera, M.^1

Silicon Institute of Technology, Bhubaneswar

751 024, India^1

关键词: Degradation temperatures;    Electrokinetic properties;    Electrostatic repulsion;    Free radical scavenging;    Poly vinyl pyrrolidone;    Polydispersity indices;    Thermal degradation temperatures;    Uniform distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/410/1/012009/pdf
DOI  :  10.1088/1757-899X/410/1/012009

来源: IOP

【 摘 要 】

In this study I report the thermal stability, microstructures, dynamic light scattering (DLS) and electro-kinetic effect in the fullerene (C60):poly(vinyl pyrrolidone) PVP nanofluids (NFs) and nanocomposite films. An improvement in the degradation temperature of C60:PVP nanocomposite reported here is ascribed to free radical scavenging ability of C60. An analysis of DLS data in terms of polydispersity index (PDI) reveals a well dispersed structure of C60 assemblies with PVP in liquid medium. The typical electro-kinetic parameters such as zetapotential (ξ) and surface conductivity (σsc) in a NF evaluates the magnitude of electrostatic repulsion between C60 particles and such measurement tender a way to boost stability of C60 nanoparticles in presence of PVP molecules in a particular carrier. Microstructures in various films were found to vary with increasing in the C60 content and decreasing in the relative PVP content in the nanocomposites. Highest thermal degradation temperature (∼ 422 C) was observed for the sample consisting of 13.9 μM C60 owing to uniform distribution of C60 in the PVP matrix with a low PDI (0.272).