Fabrication of pH-responsive molecularly imprinted polyethersulfone particles for bisphenol-A uptake

pH-responsive molecularly imprinted particles were successfully fabricated by pore-filling poly (acrylic acid) (PAA) gels into bisphenol-A (BPA)-imprinted polyethersulfone particles. The adsorbed BPA amount (or rate) decreased after filling the PAA gels both for the imprinted and nonimprinted partic...

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Bibliographic Details
Published in:Journal of applied polymer science 2009-07, Vol.113 (2), p.916-921
Main Authors: Zhao, W.F, Fang, B.H, Li, N, Nie, S.Q, Wei, Q, Zhao, C.S
Format: Article
Language:English
Subjects:
Acrylic acid
Applied sciences
bisphenol-A adsorption
Exact sciences and technology
Forms of application and semi-finished materials
Gels
Imprinted polymers
Miscellaneous
molecularly imprinted particle
pH-responsive
polyethersulfone
Polyethersulfones
Polymer industry, paints, wood
Swelling
Technology of polymers
Uptakes
Valves
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Summary:pH-responsive molecularly imprinted particles were successfully fabricated by pore-filling poly (acrylic acid) (PAA) gels into bisphenol-A (BPA)-imprinted polyethersulfone particles. The adsorbed BPA amount (or rate) decreased after filling the PAA gels both for the imprinted and nonimprinted particles. However, it was confirmed that changing the acidity of the solution reversibly controls the rebinding ability toward BPA and that the BPA uptake of the pore-filled particles exhibited chemical valve behavior at a pH between 3 and 6. This finding can be attributed to the swelling of the PAA gels in the particles. The present methodology provides a simple way to prepare pH-responsive molecularly imprinted materials and is expandable to the imprinting of other hydrophobic molecules, such as dibenzofuran. Also, the results of this work demonstrate the potential of stimuli-responsive molecularly imprinted polymer materials as smart chemicals and as drug-delivery systems.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.30014