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Prepared of Ursolic Acid Molecular Imprinting Polymer Membranes and Study of Recognization

Author: YangXiaoJing
Tutor: XiongYuanQin；LuYanBing
School: Hunan University
Course: Chemical Engineering and Technology
Keywords: Molecular imprinting Molecular imprinted membrane Ursolic acid Recognition performance
CLC: O631.3
Type: Master's thesis
Year: 2009
Downloads: 115
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Abstract


Ursolic acid is malol too. It have the functions of reducing blood fat、anti-inflammation、protect liver. It plays an important role on cosmetics and medicine. So it is therefore tremendously significant that quickly and efficiently extracts ursolic acid.Free-radical solution copolymerization of acrylic acid (AA) and acrylonitrile (AN) is carried out in DMSO at 60℃using azodiisobutyronitrile (AIBN) as initiator. AA is used as function monomer, and AN is used as membrane formation monomer. Ursolic acid imprinted membranes were synthesized via phase inversion imprinted method, using Ursolic acid as template and P(AA-co-AN) as membrane material. Scanning election microscope (SEM) was used to visualize the cross section of membranes, an asymmetric porous structure was visualized. Bond interaction between copolymer material and template was confirmed by FT-IR and UV. The saturated binding capacity of the imprinted membrane for Ursolic acid was about 0.226μmol/g, nearly 2.6 times that of non-imprinted polymer membrane. The separation factorαwas calculated as 8.69. And investigated the factor for film-forming properties of Ursolic acid imprinted membranes

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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