Dynamic mechanical and thermal analysis of aligned vapor grown carbon nanofiber reinforced polyethylene

作者：Yang Shuying; Taha Tijerina Jaime; Serrato Diaz Veronica; Hernandez Krystal; Lozano Karen^*

来源：Composites Part B: Engineering , 2007, 38(2): 228-235.

DOI：10.1016/j.compositesb.2006.04.003

• carbon fibre
• polymer-matrix composites (PMCs)
• mechanical properties
• thermal analysis
• nanofibers

Dynamic mechanical and thermal analysis of aligned vapor grown carbon-nanofibers (VGCNFs)-reinforced high-density polyethylene (HDPE) was performed. High-shear mixing was used to disperse and distribute the nanofibers. Extensional flow was used to obtain anisotropic nanoreinforced composite tapes. Dynamic mechanical analysis showed dual increase of storage modulus and loss modulus with different draw ratios. The modulus and complex viscosities of the drawn samples converged to that of pure PE at high temperatures, indicating that in the melt, the behavior is dominated by the sernicrystalline matrix. Additionally, an increase in thermal stability was observed for the composites compared to PE matrix. Differential scanning calorimetry analysis showed that the inclusion of nanofibers hindered the structure evolution of PE upon drawing.

• 出版日期2007