Role of Molecular Weight in Polymer Wrapping and Dispersion of MWNT in a PVDF Matrix.

Affiliation

Flinders Centre for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, Adelaide, South Australia 5042, Australia. [Email]

Abstract

The thermal and electrical properties of a polymer nanocomposite are highly dependent on the dispersion of the CNT filler in the polymer matrix. Non-covalent functionalisation with a PVP polymer is an excellent driving force towards an effective dispersion of MWNTs in the polymer matrix. It is shown that the PVP molecular weight plays a key role in the non-covalent functionalisation of MWNT and its effect on the thermal and electrical properties of the polymer nanocomposite is reported herein. The dispersion and crystallisation behaviour of the composite are also evaluated by a combination of scanning electron microscopy (SEM) and differential scanning calorimetry (DSC).

Keywords

Poly(4-vinylpyridine), polymer nanocomposite,Polyvinylpyrrolidone,polymer wrapping,thermal conductivity,