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|標題:||Batch adsorption performance of methyl methacrylate/styrene copolymer membranes||作者:||Chiu, H.C.
|關鍵字:||methyl methacrylate;styrene;copolymer membrane;adsorption;quercetin;protein;alpha-tocopherol;flavonoid glycosides;asymmetric pmma membranes;ginkgo-biloba;separation;chromatography;purification;styrene;morphology;proteins;kinetics;beads||Project:||Reactive & Functional Polymers||期刊/報告no：:||Reactive & Functional Polymers, Volume 66, Issue 12, Page(s) 1515-1524.||摘要:||
Methyl methacrylate (MMA)/styrene copolymer membranes with different feed molar ratios of monomers are reported. The copolymer structure and properties were examined by contact angle measurements, FT-IR and H-1-NMR spectroscopy. Membranes were fabricated by casting a liquid film of 15-20 wt% copolymer in 1-methyl-2-pyrrolidinone that was exposed to air of 90% relative humidity for 3 min and then immersed into a 25 degrees C deionized water bath. A spongelike morphology was observed for the copolymer membranes. The specific surface area and water content increased with increasing MMA/styrene ratio. In addition, the batch adsorption performance for various molecules (quercetin, proteins, a-tocopherol, and flavonoid glycosides in Ginkgo biloba L. extract) was investigated. The higher was the MMA/styrene molar ratio, the greater the related adsorption capacity was. In three cycles of batch adsorption/desorption operation, the content of flavonoid glycosides could be raised from 3.1 wt% to 14 wt%. (c) 2006 Elsevier B.V. All rights reserved.
|Appears in Collections:||化學工程學系所|
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