Cellulose acetate/ Hyperbranched poly(amine ester)-epoxidized soybean oil as highly flexible nanofiltration membrane: preparation and characterization
Paper ID : 1221-MST2015-FULL
Hossein Mahdavi *1, Aliasghar Kamyabi2, Taieb Shahalizade2
1University of Tehran
2School of Chemistry, College of Science, University of Tehran, Tehran, Iran
Cellulose acetate (CA) membranes considered as one of the first films used in reverse osmosis technology. However, they suffered to find their way for widespread commercial applications due to low mechanical stability and sensitivity to bio-fouling. In this study CA blend membrane prepared with different contents of hyperbranched poly(amine ester)-epoxidized soybean oil (PAE-ESBO), PEG-600 and CA, and membrane cast through phase inversion procedure. For this purpose, ester groups of 3rd generation of HBPAE, which was synthesized using methyl-3-[bis(2-hydroxyethyl)amino]propionate and triethanolamine are reacted with soybean oil fatty acid, and then epoxidized by H2O2/formic acid to further crosslinking with hydroxyl groups on CA chains. All reactions were monitored by FTIR technique. Simultaneously plasticized and crosslinked membrane samples investigated using ATR-FTIR, FE-SEM (top and cross-sectional) methods and tensile tests. Filtration properties was studied by pure water flux (PWF), water content, rejection and fouling resistance measurements.
Cellulose acetate, hyperbranched poly(amine ester),nanofiltration, phase inversion, epoxidized soybean oil
Status : Paper Accepted (Poster Presentation)