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Chinese Journal of Reactive Polymers 2000年第F5期9卷 38-40页

作者： xumancai OUZhize 等 DepartmentofChemsitry HunanNormalUniversityChangsha410081P.R.CHINA

MACROPOROUS CROSSLINKED POLY（N—VINYLACETAMIDE）—A Biomimetic Adsorbent for Adsorption of Tannin

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Chinese Journal of Reactive Polymers 2000年第F5期9卷 76-77页

作者： xumancai SHIZuoqing 等 DepartmentofChemistry HunanNormaluniversityChangsha410081P.R.CHINA InstituteofPolymerChemistry NankaiUniversityTianjin300071P.R.CHINA

THE APPLICATION OF A NOVEL ADSORBENT IN RAPID SAMPLE CLEAN-UP OF GINKGOLIDES AND BILOBALIDE IN EXTRACTS OF GINKGO BILOBA LEAVES

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Chinese Journal of Reactive Polymers 2000年第1期9卷 60-66页

作者： XUMingcheng xumancai SHI Zuoqing LIU Juxiang SHIRongfu HE Binglin The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer Chemistry.Nankai UniversityTianjin 300071 Department of Chemistry Hunan Normal UniversityChangsha410081

A rapid method has been developed for rapid sample clean-up in the determination of the pharmocologically active terpenoid including ginkgolide A, B. C and bilobalide in ginkgo biloba leaves extracts (GBE). The extracts are dissolved in 7% of ethanol aqueous solution and then purified by a highly selective polymeric absorbent solid-phase chromatographic column. After being concentrated, the separated terpenoids with no phenolic disturbance are determined by highperformance liquid chromatography on a Nova-Pak C18 column with methanol-water (30:70) as effluent and refractive index defection. The recovery of the method is about 95% and the new method saves more time than the conventional two-column purification method.

关键词： Ginkgo biloba. Ginkgolide Bilobalide Hydrogen bonding High-performance liquid chromatography

PURIFICATION OF GINKGO LEAVES EXTRACT WITH MACROPOROUS ADSORBENT BASED ON UREA-FORMALDEHYDE CONDENSED POLYMERS

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Chinese Journal of Reactive Polymers 2000年第1期9卷 54-59页

作者： XUMingcheng xumancai SHI Zuoqing SHI Rongfu LIU Juxiang HE Binglin The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071China Department of Chemistry Hunan Normal UniversityChangsha 410081China

The relationship between the adsorption properties for the active components of ginkgo leaves and the structure of the adsorbents based on urea-formaldehyde condensed polymers was investigated .The results revealed that these adsorbents showed very hjgh adsorption selectivity for both flavonol glycosides and terpene lactones contained in ginkgo leaves. Thus, an adsorption separation procedure for purification of ginkgo leaves extracts was developed.

关键词： Ginkgo biloba. Adsorption. Flavonol glycosides Terpene lactones

MODIFICATION OF X-5 RESIN AND ADSORPTION PROPERTY OF THE MODIFIED RESINS

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Chinese Journal of Reactive Polymers 2002年第2期11卷 162-166页

作者： HUANG Jiangou xumancai LI Haitao SHI Zuoqing HE Binglin College of Chemistry and Chemical Engineering Hunan Normal UniversityChangsha 410081 The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071

Three polymeric adsorbents with hydrogen bonding acceptors, methylamine, N-methyl-acetamide and aminotri(hydroxymethyl)methane modified resins are synthesized from chloromethylated X-5 resin. Adsorption isotherms of phenol and theophylline onto the three modified resins and the original X-5 resin from aqueous solution are measured. The results show that adsorption of compounds with hydrogen bonding donor onto methylamine and N-methylacetamide modified resins is enhanced as compared with that onto X-5 resin, and adsorption mechanism between the adsorbents and the adsorbates is mainly based on hydrogen bonding and hydrophobic interaction. While adsorption of compounds with hydrogen bonding donor onto aminotri(hydroxymethyl)methane modified resin is lowered as compared with that onto X-5 resin, and adsorption mechanism between the adsorbent and the adsorbates is mainly based on hydrophobic interaction.

关键词： Methylamine N-methylacetamide Aminotri(hydroxymethyl)methane X-5 resin Modification Adsorption Phenol Theophylline Caffeine

ADSORPTION OF PHENOLIC COMPOUNDS ONTO THE SPHERICAL MACROPOROUS ADSORBENT BASED ON UREA-FORMALDEHYDE CONDENSED POLYMER

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Chinese Journal of Reactive Polymers 2000年第1期9卷 47-53页

作者： XU Mingcheng xumancai SHI Zuoqing LIU Juxiang SHI Rongfu HE Binglin The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071 Department of Chemistry Hunan Normal UniversityChangsha 410081

Absorption of phenol, catechol and resorcinol. which vary in their ability to interact with the adsorbent through hydrogen bond, were used to investigate the adsorption mechanistic interaction. The adsorption enthalpies of the above mentioned compound onto the adsorbent were calculated and thermodynamic analysis was carried out. The results showed the adsorbent with the lowest adsorption enthalpies for the sorbate such as catechol with intermolecular hydrogen bond also display the lowest adsorption affinity On the other hand the more of the groups available for hydrogen bond interaction. the higher of the adsorption affinity These observations support the contention that phenol adsorption is driven predominantly by specific interaction of the solute with active sites on the surface of the adsorbent.

关键词： Hydrogen bond. Urea-forlmaldehyde condensed polymer Adsorption isotherms Enthalpy

SYNTHESIS OF SPHERICAL MACROPOROUS ADSORBENT BASED ON UREA-FORMALDEHYDE CONDENSED POLYMER

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Chinese Journal of Reactive Polymers 2000年第1期9卷 42-46页

作者： XU Mingcheng xumancai SHI Zuoqing LIU Juxiang SHIRongfu HE Binglin The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071China Department of Chemistry Hunan Normal UniversityChangsha 4100081China

Spherical macroporous adsorbents with active sites capable of hydrogen bonding adsorption based on urea-formaldehyde condensed polymer were synthesized via reversed suspension polymerization. The properties of the obtained adsorbent were also investigated in detail. The results showed that the water permeability could be improved by adding hydroxyl-containing organic compound moiety into the adsorbent. The specific surface area and average pore diameter of these adsorbents increased while the porosity first increased then decreased with the increase of the amount of the added hydroxyl-containing compound.

关键词： Urea-formaldehyde condensed polymer. Adsorbent.Water permeability

CHLOROMETHYLATION OF POLYMERS MADE FROM TECHNICAL DIVINYLBENZENE AND PROPERTY OF THE CHLOROMETHYLATED POLYMERS

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Chinese Journal of Reactive Polymers 2001年第1期10卷 15-20页

作者： SHI Rongfu xumancai SHI Zuoqing WANG Chunhong FAN Yunge FENG Junqian HE Binglin The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer ChemistryNankai UniversityTianjin 300071P.R.China Department of Chemistry Hunan Normal UniversityChangsha 410081P.R.China

The goal of this paper was to reveal the feasibility of chloromethylation of polymers made from technical divinylbenzene so as to introduce functional groups into polymeric adsorbents. For this study, the factors that effect the chloromethylation reaction, such as the pore structure of the polymer, the ratio of the reactants to catalyst, the reaction temperature and reaction time and so on were investigated, and the pore structure and property of the chloromethylated polymers were studied. The results showed that polymers of technical divinylbenzene could be chloromethylated successfully, and the adsorptive property of the chloromethylated resin was different from that of the initial resin.

关键词： Chloromethylated polymer Polydivinylbenzene Adsorption

A FRACTAL GEOMETRY STUDY ON THE STRUCTURE AND PROPERTY OF MACROPOROUS CROSSLINKED POLYSTYRENES

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Chinese Journal of Reactive Polymers 2000年第F5期9卷 146-146页

作者： xumancai SHIZuoqing DepartmentofChemistry HunanNormalUniversityChangsha410081CHInA TheStateKeyLaboratoryofFunctionalPllymerMaterialsforAdsorptionandSeparation InstituteofPolymerChemistryNankaiUniv DepartmentofChemistr