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114th General Meeting of Korean Chemical Society Assembly of metal and functional polymers to fluorinated ultrafiltration (UF) membranes for anti-fouling and heavy metal removal

Submission Date :
8 / 28 / 2014 , 15 : 21 : 55
Abstract Number :
Presenting Type:
Poster Presentation
Presenting Area :
Authors :
박성용, 곽승엽*
서울대학교 재료공학부, Korea
Assigned Code :
MAT.P-1114 Assigend Code Guideline
Presenting Time :
10월 15일 (수요일) 16:00~19:00
Ultrafiltration membrane obtains high quality purified water through relatively easy and simple process than traditional water treatment methods such as sand filtration, coagulation and so on. However, practical use of UF membrane is limited because of occurrence of membrane fouling by undesirable deposition of retained organic or inorganic materials to membrane and penetration of toxic heavy metal ions due to its relatively large pore size. Thus, we developed functionalized fluorinated UF membranes with fouling resistance and heavy metal removal by surface modification with various functional materials, e.g. antibacterial silver nanoparticle (Ag NP), positively charged branched polyethylene imine (b-PEI), heavy metal ion chelatable hyperbranched polyamidoamine (HPAMAM). The effects of introducing Ag NPs and b-PEI to polyvinylidene fluoride (PVDF) membrane were enhanced anti-biofouling and inhibited inorganic fouling, respectively. The assembly of HPAMAM to polytetrafluoroethylene (PTFE) membrane was applied to removal heavy metal ions from contaminated water. As expected, the prepared membranes showed desired properties such as antifouling and heavy metal removal. These make them tremendously attractive in applications ranging from high-efficient membrane to eco-friendly water purification system.