Morphology and Mechanical Properties of Multiwalled Carbon Nanotubes Reinforced Nylon-6 Composites

• DOI: 10.1021/ma049132t
• Publication Date: 2004-09-14T05:21:32Z
• Authors: Liu; In Yee Phang; Lu Shen; Shue Yin Chow; Wei-De Zhang
• Keywords: 02 engineering and technology; 0210 nano-technology

Multiwalled carbon nanotubes (MWNTs)/nylon-6 (PA6) nanocomposites with different MWNTs loadings have been prepared by the simple melt-compounding approach. A fine and homogeneous dispersion of throughout PA6 matrix is observed transmission electron microscopy. Scanning microscopy observation on fracture surfaces composites shows not only a uniform but also strong interfacial adhesion matrix, as evidenced presence many broken strongly embedded (CNTs) in absence debonding CNTs from matrix. Beadlike morphology along stretched their bundles, probably indicating anchoring locations defects (within beads) tubes where has interactions CNTs, thus being favorable to stress transfer polymer CNTs. Mechanical testing (by tensile nanoindentation tests well dynamic mechanical analysis) that, compared neat PA6, elastic modulus yield strength composite are greatly improved about 214% 162%, respectively, incorporating 2 wt % MWNTs. In addition, unique crystallization melting behavior MWNTs/PA6 discussed combining differential scanning calorimetry X-ray diffraction; that is, α-form crystals composites, which quite case PA6/clay nanocomposites.