TY - JOUR
T1 - The Role of Polyethylene Wax on the Thermal Conductivity of Transparent Ultradrawn Polyethylene Films
AU - Pan, Xinglong
AU - Schenning, Albert H.P.J.
AU - Shen, Lihua
AU - Bastiaansen, Cees W.M.
PY - 2020/7/14
Y1 - 2020/7/14
N2 - Transparency and thermal conductivity of ultradrawn, ultrahigh-molecular-weight polyethylene films containing different contents of low-molecular-weight polyethylene wax (PEwax) are explored from experimental and theoretical viewpoints. It is shown that the addition of PEwax decreases light scattering in all directions, resulting from a reduction of defects while having little effect on crystallinity or chain orientation of ultradrawn films. In general, upon the addition of PEwax, the thermal conductivity of ultradrawn films increases with the highest conductivity being 47 (W m-1 K-1) and subsequently decreases at higher concentrations. The thermal conductivity also depends on draw ratio and number-average molecular weight (Mn) of the films. A model is presented which correlates the thermal conductivity of the films with the draw ratio and Mn, enabling explanation of the experimental results. Hence, the thermal conductivity of ultradrawn polyethylene films can be predicted as a function of Mn and draw ratio.
AB - Transparency and thermal conductivity of ultradrawn, ultrahigh-molecular-weight polyethylene films containing different contents of low-molecular-weight polyethylene wax (PEwax) are explored from experimental and theoretical viewpoints. It is shown that the addition of PEwax decreases light scattering in all directions, resulting from a reduction of defects while having little effect on crystallinity or chain orientation of ultradrawn films. In general, upon the addition of PEwax, the thermal conductivity of ultradrawn films increases with the highest conductivity being 47 (W m-1 K-1) and subsequently decreases at higher concentrations. The thermal conductivity also depends on draw ratio and number-average molecular weight (Mn) of the films. A model is presented which correlates the thermal conductivity of the films with the draw ratio and Mn, enabling explanation of the experimental results. Hence, the thermal conductivity of ultradrawn polyethylene films can be predicted as a function of Mn and draw ratio.
UR - http://www.scopus.com/inward/record.url?scp=85087005880&partnerID=8YFLogxK
U2 - 10.1021/acs.macromol.9b02647
DO - 10.1021/acs.macromol.9b02647
M3 - Article
C2 - 32684640
AN - SCOPUS:85087005880
VL - 53
SP - 5599
EP - 5603
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 13
ER -