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Development of novel hybrid imprinted membranes for selective recovery of theophylline.
- Source :
-
Separation & Purification Technology . Feb2018, Vol. 192, p513-519. 7p. - Publication Year :
- 2018
-
Abstract
- A theophylline-binding polymer was synthesized utilizing the bulk polymerization technique. Methacrylic acid, ethylene glycol dimethacrylate, 2,2′-azoisobutyronitrile and chloroform were used to synthesize the imprinted polymer. Theophylline was employed as template. The obtained polymer powder were dispersed in the modified poly(ether ether ketone) (PEEK-WC) polymer solution for preparing hybrid imprinted membranes via the phase inversion technique. Membranes containing the non-imprinted polymer were also prepared and used as reference. For evaluating the recognition properties of polymers and membranes re-binding experiments, with the template and its structural homologue caffeine, were carried out. The binding capacity of MIP towards the template was 1.18 µmol/g p and the theophylline/caffeine selectivity factor was 3.2. All the imprinted membranes exhibited good recognition properties compared with blank membranes, which only showed a poor non-specific binding. The membrane containing 30 wt% of the imprinted polymer exhibited the highest binding capacity (10.97 µmol/g memb. ), and a theophylline/caffeine selectivity factor of 71.42. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THEOPHYLLINE
*BINDING constant
*POLYMERS
*ETHYLENE glycol
*METHACRYLIC acid
Subjects
Details
- Language :
- English
- ISSN :
- 13835866
- Volume :
- 192
- Database :
- Academic Search Index
- Journal :
- Separation & Purification Technology
- Publication Type :
- Academic Journal
- Accession number :
- 126230855
- Full Text :
- https://doi.org/10.1016/j.seppur.2017.10.023