FT-IR and Isotherm Study on Anion Adsorption onto Novel Chelating Fibers

Abstract

A new chelating fiber, poly(acrylo‐amidino diethylenediamine), was synthesized based on polyacrylonitrile fibers in diethylenetriamine with the aid of AlCl3. Complex formation with CrO42– was strongly pH‐dependent, as complexes formed only in the presence of NH3+ and NH2+. In the medium pH region, both ionic and hydrogen bonds were formed between poly(acrylo‐amidino diethylenediamine) and the chromate ion, as was confirmed by means of FT‐IR spectroscopy.

On adhesion mechanisms and interfacial strength in acrylonitrile–butadiene–styrene/wood sawdust composites

“…The occurrence of the -C ¼ N peak proved the covalent chemical bonding as proposed in the Scheme 2. The -C ¼ N peak at the wavenumber of 1656.22 cm À1 resulting from the chemical reaction of -CN groups in acrylonitrile and -NH 2 groups in the amino-silane coupling agent can be supported by the work of Ko et al [23]. Since the silane concentrations added into the wood/ABS composites were low the -C ¼ N band occurred became less pronounced.…”

Treatment of wastewater containing toxic chromium using new activated carbon developed from date palm seed

“…The former is relatively non-toxic and an essential trace nutrient in the human diet as well as it is believed by many 0304 to play a pharmaceutical role in the human body, while the later is highly toxic, being a mutagen and a potential carcinogen [14][15][16]. Several species can be obtained from hexavalent chromium by change the concentration and pH of chromium solution.…”

Confirmation of heavy metal ions in used lubricating oil from a passenger car using chelating self-assembled monolayer

“…Amine groups make chelating compounds with metal ions [8][9][10]. Metal ions even form metal clusters on amine groups in an aqua system [11,12].…”