Antibacterial and static dissipating composites of poly(butylene adipate-co-terephthalate) and multi-walled carbon nanotubes

摘要

Poly(butylene adipate-co-terephthalate) (PBAT) composites containing multi-walled carbon nanotubes (MWCNTs) were prepared using a melt-blending process. Acrylic acid-grafted PBAT (PBAT-g-AA) and muluhydroxyl-functionalized MWCNTs (MWCNT-OH) were used to improve the compatibility and dispersibility of MWCNTs within the PBAT matrix. The composites were characterized morphologically using transmission electron microscopy and chemically using Fourier transform infrared spectrometry, ~(13)C solid-state nuclear magnetic resonance, and ultraviolet-visible absorption spectroscopy. The antibacterial and anti-static properties of the composites were also evaluated. The functionalized PBAT-g-AA/ MWCNT-OH composite showed markedly enhanced antibacterial and anti-static properties due to the formation of ester bonds from the condensation of the carboxylic acid groups of PBAT-g-AA with the hydroxyl groups of MWCNT-OH. The optimal proportion of MWCNT-OH in the composites was 3 wt.%. In excess of this amount, compatibility between the organic and inorganic phases was compromised.