Immobilization of β-Cyclodextrin as Insoluble β-Cyclodextrin Polymer and Its Catalytic Performance  

固定β-环糊精制备不溶性β-环糊精聚合物及其催化性能(英文)

作　　者：江红果 杨祖金 周贤太 方岩雄 纪红兵 

机构地区：[1]Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology [2]School of Chemistry and Chemical Engineering,Sun Yat-sen University

出　　处：《Chinese Journal of Chemical Engineering》2012年第4期784-792,共9页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (21036009,21176268);the Higher-level Talent Project for Guangdong Provincial Universities;the Fundamental Research Funds for the Central Universities;Guangdong Province 211 Project

摘　　要：Insoluble β-cyclodextrin polymers were prepared from β-cyclodextrin(β-CD) using epichlorohydrin(EPI) as crosslinking agent under basic conditions.The polymers were characterized by Fourier Transform Infrared(FTIR),Thermogravimetry(TG),X-ray diffraction(XRD) and TG-FTIR.The results demonstrated that the polym-erization between EPI and β-CD indeed occurred,and a number of CD rings were interconnected to form a three-dimensional network.Moreover,different factors influencing the polymerization,e.g.molar ratio of EPI to β-CD,the concentration of NaOH and reaction temperature,have been investigated.The polymer prepared under the optimal conditions(the molar ratio EPI:β-CD of 44,the NaOH concentration 50% in mass,and the temperature at 65 ℃) showed excellent thermal stability and insolubility in organic solvents or strong acid/base.In addition,the β-cyclodextrin polymers also presented high catalytic activity for aqueous oxidation of benzyl alcohol with hy-pochlorite as oxidant.Insoluble β-cyclodextrin polymers were prepared from β-cyclodextrin（β-CD） using epichlorohydrin（EPI） as crosslinking agent under basic conditions.The polymers were characterized by Fourier Transform Infrared（FTIR）,Thermogravimetry（TG）,X-ray diffraction（XRD） and TG-FTIR.The results demonstrated that the polym-erization between EPI and β-CD indeed occurred,and a number of CD rings were interconnected to form a three-dimensional network.Moreover,different factors influencing the polymerization,e.g.molar ratio of EPI to β-CD,the concentration of NaOH and reaction temperature,have been investigated.The polymer prepared under the optimal conditions（the molar ratio EPI：β-CD of 44,the NaOH concentration 50% in mass,and the temperature at 65 ℃） showed excellent thermal stability and insolubility in organic solvents or strong acid/base.In addition,the β-cyclodextrin polymers also presented high catalytic activity for aqueous oxidation of benzyl alcohol with hy-pochlorite as oxidant.

关 键 词：β-cyclodextrin polymers EPICHLOROHYDRIN POLYMERIZATION catalytic activity 

分 类 号：O643.3[理学—物理化学]