title: Synthesis and characterization of a novel polyamidoamine-cyclodextrin crosslinked copolymer.
abstract: A novel insoluble crosslinked copolymer containing β-cyclodextrin (β-CD) structural units has been synthesized with polyamidoamine (PAMAM, generation 2) as comonomer. The polymer was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), elemental analysis, scanning electron microscopy (SEM), pores and surface area analysis, X-ray diffraction analysis (XRD), and thermal analysis (thermogravimetric and differential scanning calorimetric measurement, TG/DSC). The results reveal that PAMAM-CD copolymer has been synthesized successfully and two β-CD molecules were cross-linked by one PAMAM (G2.0) molecule (on average). The copolymer has a reef-like surface with many irregular nanocavities, and its thermal stability is > 180°C in an argon atmosphere. The synthesis strategy presented in this work provides an innovative route for the synthesis of a PAMAM-CD-based copolymer. In preliminary sorption experiments, the PAMAM-CD copolymer exhibits high sorption capacities and high removal efficiencies toward both the heavy-metal ions (Cu(2+) and Pb(2+)) and organic compounds (2,4-dichlorophenol, 2,4,6-trichlorophenol, and ponceau 4R (C.I. 16255)). The polymer may provide many possibilities for applications in biomedical sensing, flocculation, sorption, and therapeutics.
authors: College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing, China. tdlnjohn@ctbu.edu.cn
authors: Ning
authors: N
authors: Li
authors: Xingyue
authors: X
authors: Wei
authors: Zheng
authors: Z
authors: Mei
authors: Xiaoli
authors: X
authors: Xiong
authors: Shenming
authors: S
authors: Chen
authors: Mei
authors: M
authors: Ye
authors: Sheguang
authors: S
authors: Ding
mesh_terms: D003505:Cyclodextrins / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D011073:Polyamines / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D003505:Cyclodextrins; C531249:Poly(amidoamine); D011073:Polyamines; D011108:Polymers