Superhydrophobic

In the material coating industry always employment organic solvents, but in that location be several disadvantages much(prenominal) as environmental problem.Our research try to avoid those by employ Supercritical Carbon Dioxide (SC-CO2) as solvent of N-Octacosane ( C28) to recall Superhydrophobic acrylate resin heightens by a Rapidly Expanding Supercritical resolving force out (RESS) method. In the previous work, SC-CO2, Superhydrophobic locates properties and RESS method leave been canvass. For the generation of Superhydrophobic surface have to know the residue clipping of diffusion and the solvability of N-Octacosane in SC-CO2. Hence, in the present work, the diffusivity and the solubility of N-Octacosane in SC-CO2 have been studied to determine equilibrium time and optimum conditions that raise be operate in our laboratory (Limited push cl barrier ). [1] has been presented diffusion coefficient by wax diffusing by the drudge sphere surfaces at temperatu re 40 -70 ?C, pressure 93 -150 bar, there are diffusion coefficient 6.0×10-11 - 1.1×10-9 cm2/s and equilibrium time some 5-10 hour.

[2] have measured solubility of N-Octacosane by using a semi-flow phase equilibrium apparatus at temperature 35- 55 ?C, pressure 100-150 bar, there are solubility (mole fraction) 3.9×10-4 - 8.6×10-3. These values are acceptable, so the optimum condition for our laboratory was selected at the equilibrium time, supercritical conditions of SC-CO2 and below melting point of N-Octacosane are 40 - 55 ?C and 100 -150 bar. We are expected that at those conditions leave behind be gener ate suitable morphology, contact slant and ! correct more superhydrophobic behavior.If you want to get a profuse essay, mold it on our website: BestEssayCheap.com

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