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MIP-TFMAA-co-TRIM as Selective Adsorption of β-sitosterol

P. Taba(1), N. H. Soekamto(2), M. B. Amran(3), S. Fauziah(4),


(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar lndonesia, Jl. Perintis Kemerdekaan Km. 10, Kampus Tamalanrea Makassar 90245
(2) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar lndonesia, Jl. Perintis Kemerdekaan Km. 10, Kampus Tamalanrea Makassar 90245
(3) Chemistry Department, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung, Indonesia
(4) Chemistry Department, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung, Indonesia
Corresponding Author

Abstract


A functional monomer of trifluoromethylacrylic acid (TFMAA), a cross-linker of trimethylolpropane trimethacrylate (TRIM) and a template molecule of β-sitosterol have been used to produce a molecularly imprinted polymer, MIP_TFMAA-co-TRIM by a polymerization process based on non-covalent interaction between the monomer and the template. After the removal of the template, we used the product of MIP as an adsorbent of β-sitosterol and determined the adsorption capacity. The adsorption-desorption process for β-sitosterol and the selectivity test for β-sitosterol and cholesterol were also studied. High Performance Liquid Chromatography (HPLC) and UV-vis spectrophotometry were methods for measuring the amount of .materials adsorbed. Langmuir and Freundlich equations were models used to study the adsorption isotherm of the removal of β-sitosterol. The adsorption of β-sitosterol on MIP_TFMAA-co-TRIM followed the Freundlich isotherm with a capacity of 0.61 mg/g. The first and the second adsorption-desorption processes showed that the recovery percentages of β-sitosterol from MIP_TFMAA-co-TRIM were 66.36 and 40.56%, respectively. The MIP was more selective for β-sitosterol than for cholesterol.


Keywords


Adsorption capacity; MIP; TFMAA; TRIM, selectivity

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