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A new microemulsion approach for producing molecularly imprinted polymers with selective recognition cavities for gallic acid
Author(s) -
Nicolescu Tanta V.,
Meouche Walid,
Branger Catherine,
Margaillan André,
Sarbu Andrei,
Fruth Victor,
Donescu Dan
Publication year - 2013
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4382
Subject(s) - microemulsion , gallic acid , molecularly imprinted polymer , ethylene glycol dimethacrylate , acrylic acid , polymer , adsorption , copolymer , chemistry , selective adsorption , molecular imprinting , materials science , polymer chemistry , organic chemistry , chemical engineering , nuclear chemistry , selectivity , methacrylic acid , pulmonary surfactant , catalysis , biochemistry , engineering , antioxidant
Bulk and microemulsion systems were studied in order to obtain molecularly imprinted copolymers selective for gallic acid. Both systems contained acrylic acid as the functional monomer and ethylene glycol dimethacrylate as crosslinker. Microemulsion formation was confirmed by refractive index measurements and by conductivity analyses. Simple uptake tests revealed higher affinities for the microemulsion polymers; a 3.55 imprinting factor and a 0.275 g gallic acid (g polymer) –1 adsorption capacity were recorded. Competitive uptake tests, from an oak bark extract, were in agreement with the simple uptake results and BET analyses. Microemulsion polymer particles selectively bind 4.58 times more gallic acid molecules relative to other competitor species.