| 초록 |
Multi-walled carbon nanotubes (MWCNTs), expected as effective fillers of polymer composites, were chemically treated with hydrogen peroxide (H2O2) to improve their morphological disabilities. Morphology of MWCNTs were changed by reacting with H2O2, and waviness of MWCNTs were also decreased with time and temperature dependently. It has been shown that H2O2 is used for introducing hydroxyl groups on the surface of MWCNTs, and it mainly attacks defect sites of MWCNTs such as non-aromatic structures. As a result, waviness of MWCNTs were changed because defect sites affects curliness of MWCNTs. Polymer composites such as PC, PA66, PBT and PE were fabricated with chemically treated MWCNTs and tensile test were conducted to confirm the improvement of morphological properties affected on the mechanical properties of CNT-filled composites. |
