| Cyclodextrins (CD) are oligosaccharides composed of glucopyranose residues attached by a-1,4-linkages in a torus - like structure. The most current cyclodextrins containing six, seven, or eight glucose units and are named a-cyclodextrin,β-cyclodextrin, and y-cyclodextrin, respectively. The specific molecular structure with a hollow interior of a specific volume owns hydrophilism on the outer surface and relative hydrophobicity in their internal cavity. This makes cyclodextrin can accommodate a wide range of guest molecules, such as inorganic compound, organic compound, and noble gases. Because cyclodextrins favor holding a guest molecule in their inner cavity, those cyclodextrins are widely used in molecular recognition, separation, drug delivery, purification, and sensors.Insolubleβ-cyclodextrin copolymer was prepared by reactingβ-CD with hexamethylene diisocyanate and its inclusion adsorption behavior was investigated. The physical and chemical properties of CD copolymer were characterized by Scanning electron microscope, Fourier transform infrared spectrometer, Differential scanning calorimetry, Thermal gravimetric analysis, X rays diffraction and N2 adsorption. The effects that shaking time and temperature exerted on the inclusion adsorption of benzidine on CD copolymer have been studied at relative low initial benzidine concentration. The equilibrium of the inclusion adsorption could be described by Freundlich equation and the thermodynamic constantsΔHT,ΔST andΔGT were obtained simultaneously.A novel insoluble bimodal porous polymer containingβ-cyclodextrin was prepared to adsorb aromatic amine compound. The process involved copolymerization of styrene and methyl methacrylate with a maleic acid derivative ofβ-CD, subsequently, above formed copolymer was foamed by supercritical CO2. The chemical properties and physical structure of obtained copolymer was analyzed using FT-IR, TG, XRD, SEM and N2 adsorption techniques. The inclusion adsorption of aromatic amine compounds onβ-CD copolymer was researched. The adsorption kinetic could be fitted to a pseudo-second order kinetic equation. With the influence of molecular structure and hydrophobicity of the aromatic amine compound, the sequence of quantity of aromatic amine compounds adsorbed onβ-CD copolymer is p-toluidine>aniline>benzidine>o-toluidine. The adsorption equilibrium data of aromatic amine compound adsorbed onβ-CD copolymer were fitted to Freundlich and Langmuir models respectively.A polymerizable polyaspartic acid macromolecule carrying vinyl groups was syotbesized via reaction of polysuccinimide, diamine compounds and glycidyl methacrylate at 50℃. By free radical copolymerization of the PASP macromolecule with functionalizedβ-cyclodextrin derivatives, a novel biodegradable copolymer, polyaspartic acid-β-cyclodextrin with molecular inclusion ability was prepared for the first time. The chemical structures of polymerizable monomers and final copolymer were characterized by FT-IR and Nuclear magnetic resonance. The thermal properties of the final copolymer were investigated by TG. The inclusion adsorption and dissolution kinetics of ibuprofen on polyaspartic acid-β-cyclodextrin were also studied.The activated carbon was oxidized by nitric acid, hydrogen peroxide, and potassium permanganate to produce significant improvement of surface functional groups containing oxygen atoms in carbon surface. The surface morphology of activated carbon before and after oxidization was characterized by SEM. Epichlorohydrin was immobilized on activated carbon by reacting with hydroxyl group. Subsequently, cyclodextrin was grafted on the activated carbon by reacting with epichlorohydrin in alkaline solution. The characterization of FT-IR and TG could be used to certify cyclodextrin had been grafted on the activated carbon by the peak of FT-IR spectra at 941cm-1 and the weight loss of TG curve at 330℃. The adsorption of toluene diamine on activated carbon before and after oxidization was researched. With the improvement of surface functional groups, the adsorption ability of activated carbon decreased. Similarly, the adsorption ability of activated carbon also decreased after the introduction of cyclodextrin unit with high hydrophilic property onto activated surface.
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