| 초록 |
hexagonal boron nitride nanosheets grafted with aliphatic groups (Alkyl-BN) were synthesized by a sonication-assisted alcoholysis reaction using hexagonal boron nitride (hBN) with 1-dodecanol, and a series of polypropylene (PP) nanocomposites were prepared by mixing PP with different amount of Alkyl-BN. The PP/Alkyl-BN nanocomposite containing a very small amount of Alkyl-BN showed much improved mechanical properties than those of neat PP and PP/hBN nanocomposites. For instance, Young's modulus value and tensile strength of PP/Alkyl-BN nanocomposite containing 0.5 wt.% of Alkyl-BN are larger than that of neat PP by 17.5 % and 7.4 %, respectively due to the enhanced interfacial interaction between Alkyl-BN and PP chains. Furthermore, the PP/Alkyl-BN nanocomposites exhibited enhanced thermal conductivity and stability than the neat PP and PP/hBN nanocomposite. |
