Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants

Polymers have been molecularly imprinted for the purpose of binding specifically to α-tocotrienol (vitamin E). A molecularly imprinted polymer (MIP) material was prepared using α-tocotrienol as the imprinted molecule, acrylamide as functional monomer and macroporous chitosan beads as functional matr...

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Main Authors: N. Saifuddin, A. A. Nur Yasumira
Format: Article
Language:English
Published: Hindawi Limited 2010-01-01
Series:E-Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2010/402698
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spelling doaj-8d1fda45686b4975afb828da5b1ad8cc2020-11-24T20:55:11ZengHindawi LimitedE-Journal of Chemistry0973-49452090-98102010-01-01741362137410.1155/2010/402698Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of AntioxidantsN. Saifuddin0A. A. Nur Yasumira1Chemistry Unit, Department of Engineering Science , College of Engineering, University Tenaga Nasional, Km7, Jalan Kajang-Puchong, Serdange-43009, Selangor, MalaysiaChemistry Unit, Department of Engineering Science , College of Engineering, University Tenaga Nasional, Km7, Jalan Kajang-Puchong, Serdange-43009, Selangor, MalaysiaPolymers have been molecularly imprinted for the purpose of binding specifically to α-tocotrienol (vitamin E). A molecularly imprinted polymer (MIP) material was prepared using α-tocotrienol as the imprinted molecule, acrylamide as functional monomer and macroporous chitosan beads as functional matrix. Chitosan-graft-polyacrylamide was synthesized without any radical initiator or catalyst using microwave (MW) irradiation. The representative microwave synthesized graft copolymer was characterized by fourier transform-infrared spectroscopy, taking chitosan as a reference. Microwave irradiation was exploited for polyacrylamide grafting on the cross-linked chitosan beads to produce MIP, where both time as well as chemicals can be saved. It can be assumed that the chitosan coated polyacrylamide MIP will have better pH stability and enhanced adsorption capacity. The maximum adsorption capacity was observed to be 3.95 mg/g of MIP, which gave removal efficiency of 93%. After 4 h, the change of adsorption capacities for α-tocotrienol did not show notable effects. The Langmuir and Freundlich adsorption models were also applied to describe the equilibrium isotherms.http://dx.doi.org/10.1155/2010/402698
collection DOAJ
language English
format Article
sources DOAJ
author N. Saifuddin
A. A. Nur Yasumira
spellingShingle N. Saifuddin
A. A. Nur Yasumira
Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
E-Journal of Chemistry
author_facet N. Saifuddin
A. A. Nur Yasumira
author_sort N. Saifuddin
title Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
title_short Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
title_full Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
title_fullStr Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
title_full_unstemmed Microwave Enhanced Synthesis of Chitosan-graft Molecularly Imprinted Polymer (MIP) for Selective Extraction of Antioxidants
title_sort microwave enhanced synthesis of chitosan-graft molecularly imprinted polymer (mip) for selective extraction of antioxidants
publisher Hindawi Limited
series E-Journal of Chemistry
issn 0973-4945
2090-9810
publishDate 2010-01-01
description Polymers have been molecularly imprinted for the purpose of binding specifically to α-tocotrienol (vitamin E). A molecularly imprinted polymer (MIP) material was prepared using α-tocotrienol as the imprinted molecule, acrylamide as functional monomer and macroporous chitosan beads as functional matrix. Chitosan-graft-polyacrylamide was synthesized without any radical initiator or catalyst using microwave (MW) irradiation. The representative microwave synthesized graft copolymer was characterized by fourier transform-infrared spectroscopy, taking chitosan as a reference. Microwave irradiation was exploited for polyacrylamide grafting on the cross-linked chitosan beads to produce MIP, where both time as well as chemicals can be saved. It can be assumed that the chitosan coated polyacrylamide MIP will have better pH stability and enhanced adsorption capacity. The maximum adsorption capacity was observed to be 3.95 mg/g of MIP, which gave removal efficiency of 93%. After 4 h, the change of adsorption capacities for α-tocotrienol did not show notable effects. The Langmuir and Freundlich adsorption models were also applied to describe the equilibrium isotherms.
url http://dx.doi.org/10.1155/2010/402698
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AT aanuryasumira microwaveenhancedsynthesisofchitosangraftmolecularlyimprintedpolymermipforselectiveextractionofantioxidants
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