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Characterization and Adsorption Performance of Polyurethane Foam Synthesized From Guluronic Acid Rich Sodium Alginate |
Mingtian LI,Yan ZHAO,Zhiyu LIU,Yukun YAN,Jinsong ZHANG( ) |
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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Cite this article:
Mingtian LI,Yan ZHAO,Zhiyu LIU,Yukun YAN,Jinsong ZHANG. Characterization and Adsorption Performance of Polyurethane Foam Synthesized From Guluronic Acid Rich Sodium Alginate. Chinese Journal of Materials Research, 2014, 28(12): 942-948.
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Abstract Polyurethane foams based on guluronic acid (G)-rich sodium alginate (PF-SA) were synthesized by using cross-linking low molecular weight G-rich alginic acid(LG-HA)with hexamethylene diisocyanate (HDI). The prepared PF-SA was characterized and its adsorption performance of methylene blue (MB) in aqueous solution was investigated by XRD, FTIR, SEM, BET. The results show that the dosage of HDI and the concentration of LG-HA have a significant impact on the morphology and the microstructure of PF-SA; PF-SA with three-dimensional interconnected pore structure may be prepared when the molar ratio of HDI to the monomer unit of LG-HA was in the range of 1: 4 to1: 3, the concentration of LG-HA was in the range of 0.08-0.1 g/mL; this PF-SA is effective for the adsorption of MB: for a solution with concentration of 100 mg/L MB, the adsorption equilibrium can be reached in 30-160 min at room temperature. The removal efficiency of MB was as high as 99%.
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Received: 18 August 2014
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