Abstract
The influence of melt dispersion of intercalted montmorillonite nanofiller (MT) on electrical and rheological properties of three conductive polymer composites (CPC): poly(ethylene)-carbon black (PE-CB), poly(propylene)-carbon black (PP-CB) and poly(ethylene-co-ethyl acrylate)-carbon black (EEA-CB) has been investigated as a function of the nature of both fillers and matrices. Even at very low content, i.e., less than 1.25% v/v, MT has an important effect on the percolation threshold and on the storage ( G′) and loss ( G″) moduli. The phenomena observed tend to show that CB aggregates can adsorb on MT platelets thus modifying both the level of CB dispersion and the flow properties. Added to EEA-CB, MT decreases the resistivity by 2.5 decades and decrease the storage modulus in the melt by 40% thus improving the conductivity and processing conditions.
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