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Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity
Zhang, Zhong1,2; Chen, Lingxin1; Yang, Fangfang1; Li, Jinhua1; Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. lxchen@yic.ac.cn; jhli@yic.ac.cn
2014
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume4Issue:60Pages:31507-31514
Contribution Rank[Zhang, Zhong; Chen, Lingxin; Yang, Fangfang; Li, Jinhua] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Zhang, Zhong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
AbstractCore-shell molecularly imprinted polymers (CS-MIPs) have aroused increasing interest owing to their easy accessibility and favorable mass transfer. Herein, we explore the correlation between shell thickness and binding capacity by using Sudan I as template molecule to prepare different CS-MIPs at the surface of carboxyl polystyrene through emulsion polymerization with a two-step temperature-rising process. Extensive characterization was performed using techniques such as SEM/TEM, FT-IR, BET, and TGA. Main factors were systematically studied such as the amount of prepolymer solution, the amount of SDS, and the temperature step. Under the optimized conditions, CS-MIPs with a shell thickness of 2.60 mu m presented the highest binding capacity of 30.1 mu mol g(-1) and the most rapid mass transfer rate. A uniform sphere model was constructed, and it was found that template molecules located in the spherical MIPs with a diameter of 5.20 mu m will be completely eluted, thereby attaining the maximum binding capacity. The static adsorption isotherm followed the Langmuir-Freundlich adsorption model, and the fast kinetics obeyed the pseudo-second-order kinetics model. High recognition specificity for Sudan I with respect to its analogues was displayed, with an imprinting factor of 2.7. The establishment of a critical value of shell thickness provides new insights into the preparation methodology and molecular recognition mechanism of core-shell imprinted polymers.; Core-shell molecularly imprinted polymers (CS-MIPs) have aroused increasing interest owing to their easy accessibility and favorable mass transfer. Herein, we explore the correlation between shell thickness and binding capacity by using Sudan I as template molecule to prepare different CS-MIPs at the surface of carboxyl polystyrene through emulsion polymerization with a two-step temperature-rising process. Extensive characterization was performed using techniques such as SEM/TEM, FT-IR, BET, and TGA. Main factors were systematically studied such as the amount of prepolymer solution, the amount of SDS, and the temperature step. Under the optimized conditions, CS-MIPs with a shell thickness of 2.60 mu m presented the highest binding capacity of 30.1 mu mol g(-1) and the most rapid mass transfer rate. A uniform sphere model was constructed, and it was found that template molecules located in the spherical MIPs with a diameter of 5.20 mu m will be completely eluted, thereby attaining the maximum binding capacity. The static adsorption isotherm followed the Langmuir-Freundlich adsorption model, and the fast kinetics obeyed the pseudo-second-order kinetics model. High recognition specificity for Sudan I with respect to its analogues was displayed, with an imprinting factor of 2.7. The establishment of a critical value of shell thickness provides new insights into the preparation methodology and molecular recognition mechanism of core-shell imprinted polymers.
KeywordSolid-phase Extraction Precipitation Polymerization Freundlich Isotherm Nanoparticles Recognition Surface Proteins Microspheres Separation Matrix
Department中科院海岸带环境过程与生态修复重点实验室
Subject AreaChemistry, Multidisciplinary
DOI10.1039/c4ra03282a
Funding OrganizationChemistry
Indexed BySCI
WOS KeywordSOLID-PHASE EXTRACTION ; PRECIPITATION POLYMERIZATION ; FREUNDLICH ISOTHERM ; NANOPARTICLES ; RECOGNITION ; SURFACE ; PROTEINS ; MICROSPHERES ; SEPARATION ; MATRIX
SubtypeArticle
Language英语
WOS Research AreaChemistry
WOS IDWOS:000341298000001
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/8782
Collection中科院海岸带环境过程与生态修复重点实验室
Corresponding AuthorChen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China. lxchen@yic.ac.cn; jhli@yic.ac.cn
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationYantai Institute of Coastal Zone Research, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Zhong,Chen, Lingxin,Yang, Fangfang,et al. Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity[J]. RSC ADVANCES,2014,4(60):31507-31514.
APA Zhang, Zhong,Chen, Lingxin,Yang, Fangfang,Li, Jinhua,Chen, LX ,&jhli@yic.ac.cn.(2014).Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity.RSC ADVANCES,4(60),31507-31514.
MLA Zhang, Zhong,et al."Uniform core-shell molecularly imprinted polymers: a correlation study between shell thickness and binding capacity".RSC ADVANCES 4.60(2014):31507-31514.
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