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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2018.28.1.37

Structural and Thermal Properties of Polysulfone Membrane Including Graphene  

Choi, Hyunmyeong (Division of Advanced Materials Engineering, Dong-Eui University)
Choi, Yong-Jin (Division of Advanced Materials Engineering, Dong-Eui University)
Sung, Choonghyun (Division of Advanced Materials Engineering, Dong-Eui University)
Oh, Weontae (Division of Advanced Materials Engineering, Dong-Eui University)
Publication Information
Membrane Journal / v.28, no.1, 2018 , pp. 37-44 More about this Journal
Abstract
Polysulfone composites including graphene were prepared, and their thermal characteristics in membrane states were analyzed by using a custome-made residual stress analyzer and a thermal diffusivity analyzer based on laser flash method. The residual stress analysis was carried out on the polysulfone composite films deposited on Si (100) substrates for 1 cycle of heating and cooling runs. The flat membrane of graphene-embedded polysulfone composites were prepared by the phase transfer method in distilled water and the thermal conductivity was separately measured in the out-of-plane and the in-plane directions. The residual stress of the graphene-embedded polysulfone film was gradually decreased with increasing graphene loading and the out-of-plane thermal conductivity was distinguished from the in-plane thermal conductivity in the flat membranes. These thermal characteristics are caused by the structural uniqueness of graphene and the micro-void structures formed during membrane fabrication.
Keywords
Polysulfone; Graphene; Membrane; Residual stress; Thermal conductivity;
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