폴리프로필렌/탄소나노튜브 복합필라멘트 제조 및 특성분석

초록

The properties of polypropylene (PP)/multi-walled carbon nanotubes (MWNTs) composite were examined. MWNTs were wrapped with polypropylene-graft-maleic anhydride (PP-g-MA) followed by functionalization with hydrogen peroxide (H2O2) for good dispersion in a PP matrix. The H2O2-treated MWNTs were characterized by Raman spectroscopy (RAMAN) and Elemental analysis (EA). These results suggest that hydroxyl groups were introduced to the nanotube surface. The homogeneously dispersed PP/MWNT nanocomposites were prepared by melt mixing using a twin-screw extruder. The SEM images of the neat MWNTs and functionalized MWNTs showed that the functionalized MWNTs had been dispersed well in the matrix whereas the neat MWNTs (N-MWNTs) aggregated. Thermal analysis and the stress-strain data showed that the well dispersed MWNTs in the PP matrix greatly enhanced the mechanical and thermal properties of polypropylene.

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