Electrical and rheological characteristics of poly(vinyl acetate)/multi-walled carbon nanotube nanocomposites

• Published in: Diamond and related materials Vol. 16; no. 4; pp. 1170 - 1173
• Main Authors: Choi, C.S., Park, B.J., Choi, H.J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2007; Elsevier
• Subjects: Carbon nanotube; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic transport in multilayers, nanoscale materials and structures; Exact sciences and technology; Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties; Materials science; Morphology; MWNT; Nanocomposite; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanotubes; Physics; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Carbon nanotube; Nanocomposite; MWNT; Morphology; Molecular motion; Electrical conductivity; Electrical properties; Carbon nanotubes; Dispersions; Raman spectroscopy; Acetates; Composite materials; Transmission electron microscopy; Nanocomposites; Multiwalled nanotube; Focusing; Internal structure; Nanostructured materials; Electrical characteristic
• ISSN: 0925-9635; 1879-0062
• DOI: 10.1016/j.diamond.2006.11.075

Focusing on good dispersion of carbon nanotube (CNT) in the polymeric matrix, morphological and rheological properties as well as electrical conductivity of poly(vinyl acetate) (PVAc)/multi-walled carbon nanotube (MWNT) nanocomposites were investigated. Electrical properties of the PVAc/MWNT nanocomposites were examined using a resistometer. Small amount of MWNT was observed to remarkably decrease resistivity of the nanocomposites. Internal structure of the nanocomposite materials was characterized by transmission electron microscope. Raman spectroscopy was adopted to investigate molecular motion of CNT in the composites. Moreover, rheological properties of the nanocomposites were measured using a rotational rheometer, observing increased storage ( G′) and loss moduli ( Gʺ) as a function of frequency in an oscillatory shear mode.