1 research outputs found
Appearance of Perfect Amorphous Linear Bulk Polyethylene under Applied Electric Field and the Analysis by Radial Distribution Function and Direct Tunneling Effect
Without
melting flow, linear ultrahigh molecular weight
polyethylene
(UHMWPE) provided X-ray intensity curve from only amorphous halo at
129.0 °C (surface temperature, <i>T</i><sub>s</sub> arisen by Joule heat) lower than the conventionally known melting
point 145.5 °C on applying electric field to UHMWPE-nickel-coated
carbon fiber (NiCF) composite. Such surprising phenomenon was analyzed
by simultaneous measurements of X-ray intensity, electric current,
and <i>T</i><sub>s</sub> as a function of time. The calculated
radial distribution function revealed the amorphous structure with
disordered chain arrangement. The appearance of such amorphous phase
was arisen by the phenomenon that the transferring electrons between
overlapped adjacent NiCFs by tunneling effect struck together with
X-ray photons and some of the transferring electron flown out from
the gap to UHMWPE matrix collided against carbon atoms of UHMWPE.
The impact by the collision caused disordering chain arrangement in
crystal grains