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Structure Performance Changes of Hydrophobic Polypropylene Membrane in Solution Environment


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Structure Performance Changes of Hydrophobic Polypropylene Membrane in Solution Environment
LU Jian-gangCHEN Min-dongXU Jian-qiangSONG Yuan-yuan
School of Environmental Science and Engineering,Nanjing University of Information Scienceand Technology,Nanjing 210044,China
hydrophobic polypropylene membrane solutions membrane structure performance characterization membrane technology
Structure changes of hydrophobic polypropylene membrane are investigated by dipping the hydrophobic polypropylene membrane into different types of solutions.Effects of monoethanolamine(MEA),glycinate(GLY),potassium hydroxide(KOH) and water(H2O) on the structure of hydrophobic polypropylene membrane are characterized by means of element analysis,mechanical intensity and penetration flux determinations.The results show that: the change of element H in the membrane components is the largest after the membrane dipped in the three solutions;the change trend of elements of the membrane components increases with the increase of solution concentrations;the effect order of the solutions from big to small on mechanical intensity of the membrane is MEA,GLY and KOH within the same dipping time.Effects of organic solutions on mechanical intensity are bigger than those of inorganic solutions.Penetration fluxes of the membrane increase after the hydrophobic polypropylene membrane are dipped in solutions.Among the effects on penetration flux,the effect of aqueous MEA on the penetration flux is the largest,and the effect of H2O on the penetration flux is unshown.


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Last Update: 2012-11-19