Evaluation on Dynamic Mechanical Property of Polyurethane Graphite Thin Films Composites

Virgin Cooking Oil (VCO) is the main substances in fabricating polyurethane graphite thin films. Polyurethane graphite is produce from the reaction of bio-monomer and cross linker into solid substances with the increment 2% of graphite weight loading through a slip casting method. The neat polyurethane is namely as NP and polyurethane graphite is namely as PG
₂
, PG
₄
, PG
₆
, PG
₈
, PG
₁₀
. The morphological view of the thin films surface was observed using Optical Microscope (OM). The results exhibit a homogeneous random dispersed of graphite into polyurethane due to fine interconnected interface within the matrix. Ultraviolet-visible spectroscopy (UV-Vis) the transmittance of the light UV-VIS for the six samples is measure. Further material properties in term of thermal-mechanical dependence of polyurethane graphite composites were determined using Dynamic Mechanical Analysis (DMA). This reported that the addition of graphite changes the matrix properties to stronger modulus and consequent lower Tan $\sigma$, with respect of increasing temperature.