Photografting Modification of Polypropylene Membranes for Adsorption of Sodium Salicylate
Polypropylene (PP) functionalized membranes were prepared by photografting N,N-dimethylaminoethyl methacrylate (DMAEMA) with benzophenone (BP) as a photoinitiator,which was coated onto the membrane with two different procedures. Adsorption properties of the PP functionalized membrane to sodium salicylate from aqueous solution were investigated.Experimental results show that method Ⅱ, which is immersing the PP membranes in BP/n-heptane and subsequently in acetone for solvent exchange, increases the grafting degree of the poly(DMAEME). An enhanced grafting degree leads to an increase in adsorption amount of sodium salicylate. The adsorption behavior accords well with Langmuir equation with maximum adsorption amount of 0.088 mmol/g-membrane and Langmuir constant of 0.069 mmol/L for the membrane with grafting degree of 13.59%.
PP DMAEMA photografting sodium salicylate
Yinhua Li Gaohong He Wei Zhao Jia Ju Zhengwen Hu
State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology,Dalian Univers State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology,Dalian Univers
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）