A Solvent-Free Dispersion Method for the Preparation of PET/MWCNT Composites

作者：Santoro Gonzalo; Gomez Marian A; Marco Carlos; Ellis Gary^*

来源：Macromolecular Materials and Engineering, 2010, 295(7): 652-659.

DOI：10.1002/mame.200900384

• mechanical properties
• nanocomposites
• polyesters
• processing
• thermal properties

A simple, easily accessible solvent-free method for the dispersion of MWCNTs into PET is proposed, based on the preparation of a microparticulate polymer/nanotube masterbatch via cryogenic impact-milling and its subsequent melt blending with the bulk polymer. Thermal and mechanical properties of nanocomposites prepared using this method were evaluated as a function of nanotube concentration. Thermal stability was improved, and superior crystallization behavior of PET in the nanocomposites was observed. Significant improvements of around 25% in tensile strength and tensile modulus of the nanocomposites was achieved using this strategy, with only 0.25 wt.-% MWCNT, compared to previous literature data where 1 wt.-% MWCNT was employed.

• 出版日期2010-7-12