The iminodiacetic acid chelate fiber(IDACF) which has a property of selective adsorption, was fabricated by amination and carboxylation using chloramethylated polypropylene grafted styrene fiber as raw material. Orthogonal experiment was adopted to study the effect of temperature, time, liquor ratio and the amount of chloroacetic acid on carboxylation reaction. The maximum adsorption capacity of iminodiacetic acid chelate fiber to Cu2+ is 65.54mg·g-1, which is 10.52 times of that of Fe3+. Elementary analysis(EA), Fourier transform infrared spectrum(FT-IR), scanning electron microscopy(SEM) and thermogrametry(TG) were used to characterize the structure and the properties of the iminodiacetic acid chelate fiber. The results show that iminodiacetic acid has been transformed to the raw fiber successfully after amination and carboxymethylation, and IDACF has good thermal stability.
DENG Q , ZENG Q X , FENG C G . Study on preparation and properties of polyvinyl alcohol based alkali anion exchange fiber[J]. Journal of Materials Engineering, 2006, (11): 22- 26.
DOMINGUEZ L , BENAK K R , ECONOMY J . Design of high efficiency polymeric cation exchange fibers[J]. Polym Adv Technol, 2011, 12, 197- 205.
RAMAZAN C , YASIN D . Preparation of double amidoxime-containing chelating fiber for removal of chrome(VI) Ions[J]. Journal of Macromolecular Science, 2014, 51 (10): 767- 782.
ZENG Y L. Synthesis and properties of highly hydrophilic iminodiacetic acid resins[D].Changsha:Hunan Normal University, 2001.
QIAO X Y , LI H , LI H C . ICP-OES determination of trace amounts of Cu2+, Pb2+, Cd2+ in water after separation and enrichment by D401 chelating resin column[J]. Aging and Application of Synthetic Material, 2013, 42 (2): 18- 20.
DENG Q , ZENG Q X , FENG C G . Study on structure characterization and properties of polypropylene based alkali amino exchange fiber[J]. Journal of Material Science and Technology, 2006, 24 (5): 642- 645.
SUN X L. The preparation and application of chelate fiber[D]. Beijing:Beijing Institute of Technology, 2009.
FENG C G , SUN Y R , LI M Y , et al. FTIR spectroscopic study on synthesis and adsorption performance of amino phosphonic acid chelating fiber[J]. Spectroscopy and Spectral Analysis, 2012, 32 (12): 3188- 3192.