Aminating modification of viscose fibers and their CO2 adsorption properties |
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Authors: | Qinghua Wu Shuixia Chen Shihe Luo Teng Xu |
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Affiliation: | 1. Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou, People's Republic of China;2. Materials Science Institute, Sun Yat‐Sen University, Guangzhou, People's Republic of China |
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Abstract: | An adsorbent for CO2 capture was prepared by the grafting of acrylonitrile (AN) onto viscose fibers (VFs); this was followed by amination with triethylene tetramine (TETA). The effects of the reaction conditions, such as the concentrations of the monomer, initiator, and nitric acid, on the grafting degree and grafting efficiency were studied. The adsorption performance of the adsorbent for CO2 was evaluated by fixed‐bed adsorption. The highest dynamic adsorption capacity of the adsorbent for CO2 was 4.35 mmol/g when the amine content of the adsorbent VF–AN–TETA reached 13.21 mmol/g. Compared with the polypropylene (PP)‐fiber‐based adsorbent (PP–AN–TETA), VF–AN–TETA with hydroxyl groups on the fibers facilitated the diffusion of CO2 and water and led to a higher CO2 adsorption capacity than that of PP–AN–TETA. The VF–AN–TETA adsorbent also showed good regeneration performance: its CO2 adsorption capacity could still retain almost the same capacity as the fresh adsorbent after 10 adsorption–desorption cycles. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 132, 42840. |
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Keywords: | adsorption fibers functionalization of polymers grafting surfaces and interfaces |
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