One-pot synthesis of molecular-imprinted membrane for selective extraction of caffeic acid

  • Azalina Mohamed NasirEmail author
  • Noor Hidayah Ishak
  • Muhammad Sufian Mohd Said
  • Irfan Hatim Mohamed Dzahir
Original Paper


This research investigated the capabilities of caffeic acid-imprinted membrane (CA-IM) toward the selective extraction of caffeic acid (CA). A simpler surface-imprinted membrane using poly(vinylidene fluoride) as supporting membrane, CA as the template, ethylene glycol dimethacrylate as the cross-linker, and 4-vinylpyridine as the functional monomer was developed. The characterization of the membrane’s surface after the polymerization process was analyzed with Fourier transform infrared spectroscopy and a scanning electron microscope. Molecular modeling showed a ratio of 1:4 for which template/monomer gave the highest at − 18.09 kcal/mol. This indicates that this ratio can form a stable complex and a greater affinity toward CA. Batch rebinding and kinetics were performed and then followed by isotherm and kinetic adsorption modeling. Our results show that CA-IM fitted with Freundlich adsorption model and kinetic adsorption of CA-IM followed the second-order model. The selectivity experiment indicated that the adsorption capacity (1.497 mg/g), distribution coefficients, KD (1.939), and selectivity of polymers to CA were higher than for gallic acid and vanillic acid for CA-IM when compared to NIM. These results demonstrated that CA-IM is a capable and effective material for the selective adsorption and enrichment of CA compounds.


Caffeic acid Molecular-imprinted membrane Polymerization PVDF 



The research was supported by Ministry of Higher Education of Malaysia through fundamental research Grant No. FRGS/1/2016/TK05/UNIMAP/03/1.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Chemical Engineering Technology, Faculty of Engineering TechnologyUniversiti Malaysia PerlisPadang BesarMalaysia
  2. 2.School of Bioprocess EngineeringUniversity Malaysia PerlisArauMalaysia

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