Biaxial deformation of high density polyethylene/carbon nanotube nanocomposites

What is it about?

Biaxial stretching of melt mixed high density polyethylene (HDPE)/multiwalled carbon nanotube (MWCNT) nanocomposites was conducted in the melt state at different stretching ratios (SRs). The addition of MWCNTs leads to significant strain hardening in the HDPE, greatly improving the stability and thus processability of the stretching process. The mechanical properties of stretched composites were improved, but the electrical conductivity was decreased due to the destroy of conductive networks.

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Why is it important?

This study adds to the literature in this area in that we are examining a polymer matrix that is of significant commercial interest and we report mechanical and thermal as well as electrical properties at stretch rates up to 3.0. We also comment on the processability of the composite materials which is of course critical if such materials are to be taken up commercially.