Study on Preparation of Solid Amine PAN-PEI Fiber and Its Properties of CO2 Adsorption
Sun Shicao
Chen Zhaowen
Fan Haiming
Guan Yingmei
Liu Yanyang
Abstract：Objective To prepare a kind of solid amine fiber and test its properties of CO2 adsorption and desorption.Methods PAN-PEI solid amine fibers were prepared by grafting PEI (polyethleneimine) on three types of commercial hydrolyzed PAN (polyacrylonitrile) fibers with average fiber diameters of 10.4 μm,12.0 μm,and 15.6 μm.The amine contents of PAN-PEI fibers were measured with acid-base titration,the morphology and functional groups of fibers were determined by SEM and FTIR.Results The CO2 sorption amounts of the PAN-PEI fibers (in the fiber diameter increase order) were 225 g/kg,175 g/kg and 160 g/kg respectively in 30 min,under the condition of 100 kPa pressure,25.0 ℃ temperature,80％ relative humidity,1.0％ CO2 concentration,and 100％ water content.The final concentration of CO2 was 0.7％,0.74％ and 0.75％ respectively.The regeneration efficiency of the fiber was 93.2％ through 500 times of adsorption-regeneration by 100 ℃ water steam in 5 min.Conclusion The adsorption and desorption properties of the PANPEI fibers was good when the CO2 concentrations were lower than 1％ and might be used in CO2 removal in enclosed compartments.
Keywords：CO2 adsorptionpolyacrylonitrile fiberpolyethyleniminesolid amine
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)