Synthesis of gallic acid imprinted polymer and incorporation in poly(caprolactone) mat via electrospinning

Synthesis of gallic acid imprinted polymer and incorporation in poly(caprolactone) mat via electrospinning

Molecularly imprinted polymers (MIP) are materials capable of recognizing specific molecules, usually through non-covalent bonds. In this work, gallic acid (GA) was selected as the imprinting molecule, and MIP for GA (MIP-GA) was synthesized by bulk polymerization. X-ray photoelectron spectroscopy (...

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Bibliographic Details
Published in:Express polymer letters Vol. 15; no. 7; pp. 654 - 665
Main Authors: Moraes Segundo, J. D. P., Moraes, M. O. S., Brito, W. R., Segala, K., Garcia-Basabe, Y., Rocco, M. L. M., d'Avila, M. A.
Format: Journal Article
Language:English
Published: Budapest Budapest University of Technology and Economics, Faculty of Mechanical Engineering, Department of Polymer Engineering 01-07-2021
Budapest University of Technology
Subjects:
Acids
Bulk polymerization
Chemical bonds
Chemical composition
Chemical synthesis
Chromatography
Contact angle
Covalent bonds
Electrospinning
Fine structure
Gallic acid
High performance liquid chromatography
Imprinted polymers
Infrared spectroscopy
Membranes
Pharmaceutical industry
Photoelectrons
poly (caprolactone)
Polycaprolactone
polymer membranes
Polymerization
Polymers
Polyphenols
Porous materials
Recognition
Spectrum analysis
Ultrasonic imaging
X ray absorption
X ray photoelectron spectroscopy
Brazil
Germany
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Summary:Molecularly imprinted polymers (MIP) are materials capable of recognizing specific molecules, usually through non-covalent bonds. In this work, gallic acid (GA) was selected as the imprinting molecule, and MIP for GA (MIP-GA) was synthesized by bulk polymerization. X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) confirmed the MIP-GA recognition property. Poly(caprolactone) mat containing MIP-GA particles (MIM-GA) was produced by electrospinning, which was morphologically characterized by Scanning electron microscopy (SEM). Functionalized MIM-GA was obtained by washes sequence in methanol for the GA removal from MIM-GA. The GA removal was confirmed by High-performance liquid chromatography (HPLC) with UV-Vis detection at 214 and 268 nm. The functionalized MIM-GA immersed in GA methanolic solution with a concentration of 1.0 mM extracted 96±1.5% of GA at t = 150 minutes. The vibrational modes obtained from FT-IR spectra confirmed the chemical composition of MIM-GA and its functionalization through of band at 770 cm-1. The contact angle measurements were 134.0±1.0° for electrospun MIM-GA and 125.0±1.2° for functionalized MIM-GA. The decrease was due to the absence of GA after the functionalization process. The produced MIM-GA by electrospinning acquired the recognition property of the GA imprinted polymer synthesized, which can be used for the specific detection, extraction, and purification of this important natural polyphenol.
ISSN:1788-618X
1788-618X
DOI:10.3144/expresspolymlett.2021.55